Steel ball is an important basic components, precision industrial ball especially in national economic development plays a significant role. In some special conditions, often require special material ball, to complete the
Different environments, the required functionality. In fact, some special steel grinding ball has been widely used in all areas of the national economy, including 9Cr18, 3Cr13 stainless steel, copper, aluminum, titanium and steel
Agate, glass, ceramic ball. Their application, not only promoted the development of ball manufacturing industry, but also promote the development of technology related industries and technological progress.
Production processes that ball after ball automatic cleaning, automatic visual inspection (automatically eliminate unqualified goods), auto rust, count packaging of chrome steel balls impact on the quality of the key. Visual inspection is the ball
Ball process indispensable process. Ball visual inspection including surface scratches, rust spots and other aspects of the detection surface. Ball production process: Stamping - light wear - quenching -
- A hard grind - Appearance - Lapping - Cleaning - rust - product packaging.
2011年11月24日星期四
The basic profile mesh screen
Screen is divided into raw materials used by silk screen, wire mesh and synthetic mesh screen categories. Silk screen selected according to the specifications of different denier silk yarn with the whole organization, organization, or plain semi-hank
Organization woven, woven mesh fabric similar to the way the system. Mesh came from the organization with full yarn, mesh for a long time, with half hank or plain weave. Silk screen mesh size 4 to 62 holes / cm, mostly for food
Industrial screening use, but also for different thickness of the grinding wheel grit emery cloth factory filters use. Metal screen with a yellow wire, phosphor bronze, stainless steel woven wire as raw material. Wire thickness of 0.4 ~ 0.025 mm Regulations
Lattice. They use a plain weave or twill seat-shaped organization. Metal mesh hole clear and correct, the net surface very flat, with high temperature, wear-resistant properties, stainless steel screen is also resistant to corrosion. Therefore, the metal screen
Network used for screening and oil filter in powder. Synthetic mesh with nylon or polyester filament and brown two. 15 to 30 denier filament with a single wire, mesh hole smooth surface is conducive to filtering. Fabrics Group
Organizations can use the whole skein, parties and other peaceful plain, size 19 ~ 104 holes / cm. More as a tulle printing, integrated circuits, printed circuit board making, can also be used to screen CRT phosphor and tape
Magnetic and other smaller particles. Brown silk quarry screen mesh nylon with thick brown silk as raw material, diameter of 0.55 to 0.1 mm, mostly plain weave fabric seat-shaped tissue, for mineral processing, pulp filter, belt and so on. Synthesis
Fiber mesh with no rust, corrosion, etc., can replace part of the metal mesh. Screen is a woven metal wire, metal plate punching stretch, made by certain technical methods into the network capacity
Major products are classified.
Organization woven, woven mesh fabric similar to the way the system. Mesh came from the organization with full yarn, mesh for a long time, with half hank or plain weave. Silk screen mesh size 4 to 62 holes / cm, mostly for food
Industrial screening use, but also for different thickness of the grinding wheel grit emery cloth factory filters use. Metal screen with a yellow wire, phosphor bronze, stainless steel woven wire as raw material. Wire thickness of 0.4 ~ 0.025 mm Regulations
Lattice. They use a plain weave or twill seat-shaped organization. Metal mesh hole clear and correct, the net surface very flat, with high temperature, wear-resistant properties, stainless steel screen is also resistant to corrosion. Therefore, the metal screen
Network used for screening and oil filter in powder. Synthetic mesh with nylon or polyester filament and brown two. 15 to 30 denier filament with a single wire, mesh hole smooth surface is conducive to filtering. Fabrics Group
Organizations can use the whole skein, parties and other peaceful plain, size 19 ~ 104 holes / cm. More as a tulle printing, integrated circuits, printed circuit board making, can also be used to screen CRT phosphor and tape
Magnetic and other smaller particles. Brown silk quarry screen mesh nylon with thick brown silk as raw material, diameter of 0.55 to 0.1 mm, mostly plain weave fabric seat-shaped tissue, for mineral processing, pulp filter, belt and so on. Synthesis
Fiber mesh with no rust, corrosion, etc., can replace part of the metal mesh. Screen is a woven metal wire, metal plate punching stretch, made by certain technical methods into the network capacity
Major products are classified.
Jig machine installation and maintenance:
Jig equipment maintenance is an extremely important regular work, it should be extremely close with the operation and maintenance, etc., should be full-time personnel on duty checks.
I. Installation test:
1, the device should be installed on a level concrete foundation, with anchor bolts. 2, the installation should pay attention to the level of the host body and the vertical. 3, check all parts of the bolts after installation
The doors are loose and tighten the host and, if requested to tighten. 4, according to the configuration of power equipment, power cord and control switch. 5, the inspection is completed, the empty load test, test
Normal to the production.
Two. Machine maintenance:
1, all the load bearing shoulder of the mineral jig, so good lubrication of the bearing life of a great relationship, it directly affects the life of the machine and the operation rate, and thus required to fill the oil
Must be clean, seal must be good at oiling the machine's primary (1) Turn the bearing (2) roller bearing (3) All gear (4) activities bearings, sliding plane 2, the newly installed tire
Prone to loosening must always be checked. 3, note that various parts of the machine is working properly. 4, pay attention to check the wear of wear, replace worn at any time pay attention to the
Parts. 5, put the event the device chassis plane, dust and other things so as not to be out of the machine when the material could not have broken the bottom shelf in the activities of the bearing can not move, so as to cause serious accidents.
6, the bearing temperature rise, Jig machine the reasons should be immediately stopped and checked to be eliminated. 7, when the turning gear operation should be immediately stopped if the impact of the sound check, and eliminate
I. Installation test:
1, the device should be installed on a level concrete foundation, with anchor bolts. 2, the installation should pay attention to the level of the host body and the vertical. 3, check all parts of the bolts after installation
The doors are loose and tighten the host and, if requested to tighten. 4, according to the configuration of power equipment, power cord and control switch. 5, the inspection is completed, the empty load test, test
Normal to the production.
Two. Machine maintenance:
1, all the load bearing shoulder of the mineral jig, so good lubrication of the bearing life of a great relationship, it directly affects the life of the machine and the operation rate, and thus required to fill the oil
Must be clean, seal must be good at oiling the machine's primary (1) Turn the bearing (2) roller bearing (3) All gear (4) activities bearings, sliding plane 2, the newly installed tire
Prone to loosening must always be checked. 3, note that various parts of the machine is working properly. 4, pay attention to check the wear of wear, replace worn at any time pay attention to the
Parts. 5, put the event the device chassis plane, dust and other things so as not to be out of the machine when the material could not have broken the bottom shelf in the activities of the bearing can not move, so as to cause serious accidents.
6, the bearing temperature rise, Jig machine the reasons should be immediately stopped and checked to be eliminated. 7, when the turning gear operation should be immediately stopped if the impact of the sound check, and eliminate
Spiral concentrator scope
Spiral concentrator classifier widely used in the processing plant in closed circuits with ball dubbed sub-way split mine sand, or in a gravity concentrator in the spiral classifier to grade ore and fine mud, and
Metal beneficiation processes carried out on slurry particle size grading, washing and de-mining operations in the mud, dehydration and other operations. The machine has a simple structure, reliable, and convenient operation. gravity separator
Grading machine is by means of solid particles of different sizes, the proportion of different, and therefore the velocity in the liquid of different principles, fine mineral particles floating in the water to overflow out of coarse mineral particles sink to bottom. By the spiral
Discharged into the upper part, to a hierarchical classification of gravity concentrator, the mill can grind the material powder level in the filter, then the thick film material the use of rotary vane rotary screw into the mill feed, the filter out
Fine material discharged from the overflow pipe. The machine base with channel steel, welded steel plate body. Screw shaft into the head, shaft, with cast iron sleeve, wear-resistant and durable, electric and manual lifting equipment sub-
Two. gold separator works: spiral classifier is by means of solid particles of different sizes, the proportion of different, and therefore the velocity in the liquid of different principles, fine mineral particles floating
In the water to overflow out of coarse mineral particles sink to bottom. Discharged from the screw into the top, to a hierarchical classification of mechanical equipment, the mill can grind the material powder level in the filter, then the coarse material interests
Film with a rotary vane rotary screw into the mill feed, to filter out the fine material discharged from the overflow pipe. The machine base with channel steel, welded steel plate body. Screw shaft into the head, shaft, using
Cast iron sleeve, wear durability, improved sub-unit of electric and manual. Spiral classifier
Metal beneficiation processes carried out on slurry particle size grading, washing and de-mining operations in the mud, dehydration and other operations. The machine has a simple structure, reliable, and convenient operation. gravity separator
Grading machine is by means of solid particles of different sizes, the proportion of different, and therefore the velocity in the liquid of different principles, fine mineral particles floating in the water to overflow out of coarse mineral particles sink to bottom. By the spiral
Discharged into the upper part, to a hierarchical classification of gravity concentrator, the mill can grind the material powder level in the filter, then the thick film material the use of rotary vane rotary screw into the mill feed, the filter out
Fine material discharged from the overflow pipe. The machine base with channel steel, welded steel plate body. Screw shaft into the head, shaft, with cast iron sleeve, wear-resistant and durable, electric and manual lifting equipment sub-
Two. gold separator works: spiral classifier is by means of solid particles of different sizes, the proportion of different, and therefore the velocity in the liquid of different principles, fine mineral particles floating
In the water to overflow out of coarse mineral particles sink to bottom. Discharged from the screw into the top, to a hierarchical classification of mechanical equipment, the mill can grind the material powder level in the filter, then the coarse material interests
Film with a rotary vane rotary screw into the mill feed, to filter out the fine material discharged from the overflow pipe. The machine base with channel steel, welded steel plate body. Screw shaft into the head, shaft, using
Cast iron sleeve, wear durability, improved sub-unit of electric and manual. Spiral classifier
Compound pendulum jaw crusher plate works
Upper jaw hanging in the eccentric shaft directly, as a crank connecting rod jaw crusher plate, eccentric by the eccentric shaft direct-drive, moving the bottom jaw hinge attached to a rack to support the thrust plate after
The wall. When the eccentric shaft rotates, the moving jaw of each point on the trajectory from the point of suspension of the circle line (radius equal to the eccentricity), and gradually down into oval-shaped, the more down to the Ministry, the more oval-shaped side, until
Connection point with the lower thrust plate track for the arc lines. Because of this mechanical moving jaw at various points in the trajectory is more complex, it is called complex swing jaw crusher. Reciprocate jaw crusher
Compared with the simple pendulum, and its advantages are: the quality of light, fewer components, more compact structure, degree of crushing cavity filled with good material loaded by the uniform crushing block, to move the lower jaw to push mandatory
The finished product discharge, so productivity is higher than the simple pendulum with the specifications of the jaw crusher 20-30% higher productivity; material block in the lower jaw moving up and down rolling movement of a larger, easy was the form of a cube
Like unloading, reducing the swing as simple as a sheet product ingredients, better product quality.
Jaw crusher jaw plate work in part two, first, fixed jaw plate (fixed jaw), vertical (or slightly outside the top dumping) fixed to the body before the wall, the other is the activities of the jaw plate (moving jaw), location tilt
, And the formation of the large fixed jaw plate under small crushing chamber (working chamber). Activities of the jaw plate against the fixed jaw plate to do periodic reciprocating motion, sometimes separately, sometimes close. Separately, the material into the crushing chamber
And finished products are unloaded from the bottom; close, so that crusher spare parts mounted between the two materials being squeezed, the role of bending and splitting broken.
The wall. When the eccentric shaft rotates, the moving jaw of each point on the trajectory from the point of suspension of the circle line (radius equal to the eccentricity), and gradually down into oval-shaped, the more down to the Ministry, the more oval-shaped side, until
Connection point with the lower thrust plate track for the arc lines. Because of this mechanical moving jaw at various points in the trajectory is more complex, it is called complex swing jaw crusher. Reciprocate jaw crusher
Compared with the simple pendulum, and its advantages are: the quality of light, fewer components, more compact structure, degree of crushing cavity filled with good material loaded by the uniform crushing block, to move the lower jaw to push mandatory
The finished product discharge, so productivity is higher than the simple pendulum with the specifications of the jaw crusher 20-30% higher productivity; material block in the lower jaw moving up and down rolling movement of a larger, easy was the form of a cube
Like unloading, reducing the swing as simple as a sheet product ingredients, better product quality.
Jaw crusher jaw plate work in part two, first, fixed jaw plate (fixed jaw), vertical (or slightly outside the top dumping) fixed to the body before the wall, the other is the activities of the jaw plate (moving jaw), location tilt
, And the formation of the large fixed jaw plate under small crushing chamber (working chamber). Activities of the jaw plate against the fixed jaw plate to do periodic reciprocating motion, sometimes separately, sometimes close. Separately, the material into the crushing chamber
And finished products are unloaded from the bottom; close, so that crusher spare parts mounted between the two materials being squeezed, the role of bending and splitting broken.
Notes on belt conveyor roller
As the belt conveyor roller in the industrial production of popular varieties, high performance, lightweight, versatile, long life is the manufacturers concerned about several aspects. In industrial production, the correct use of transport
Band is particularly important in the use of belt conveyor steel rollers should note the following: 1. To avoid roller covered by material, resulting in rotation not working, to prevent leakage of material between the cards in the drum and the tape, pay attention to conveyor belt
Lubrication of moving parts, but not oil belt; 2 to prevent the belt load start-up; 3 conveyor belt deviation occurs, should take timely measures to correct; 4 that belt Bureau
Ministry of damage, the application of rayon timely repair, so as not to expand; 5 conveyor belt to avoid being rack, post or block bulk materials, to prevent the misfortune to scratch the rip.
conveyor idler roller at startup, the motor current is 5-6 times higher than the nominal, not only will affect the motor life and consume more power. Department of conveyor speed adjustment
The motor system in the design selection will leave a margin on the motor speed is constant, but in actual use, sometimes a lower or higher speeds, so the change
Frequency transformation is necessary. SAJ is a frequency roller conveyor parts can achieve soft-start motor, belt drive frequency by changing the speed of the equipment to save energy, and give equipment over-current, over voltage
And overload protection.
Band is particularly important in the use of belt conveyor steel rollers should note the following: 1. To avoid roller covered by material, resulting in rotation not working, to prevent leakage of material between the cards in the drum and the tape, pay attention to conveyor belt
Lubrication of moving parts, but not oil belt; 2 to prevent the belt load start-up; 3 conveyor belt deviation occurs, should take timely measures to correct; 4 that belt Bureau
Ministry of damage, the application of rayon timely repair, so as not to expand; 5 conveyor belt to avoid being rack, post or block bulk materials, to prevent the misfortune to scratch the rip.
conveyor idler roller at startup, the motor current is 5-6 times higher than the nominal, not only will affect the motor life and consume more power. Department of conveyor speed adjustment
The motor system in the design selection will leave a margin on the motor speed is constant, but in actual use, sometimes a lower or higher speeds, so the change
Frequency transformation is necessary. SAJ is a frequency roller conveyor parts can achieve soft-start motor, belt drive frequency by changing the speed of the equipment to save energy, and give equipment over-current, over voltage
And overload protection.
Cyanidation gold concentrator process
Cyanidation of gold concentrator from ore or modern technology to extract gold ore the main method. Cyanidation gold extraction process include: cyanide leaching, leaching pulp washing filters, cyanide cyanide solution or slurry
The extraction and finished a few basic processes such as smelting. China's gold mine existing cyanidation plant basically two types of gold extraction process used, one is a thick continuous counter-current washing machine, set with zinc powder
For settling the so-called conventional gold recovery by cyanidation gold extraction process (CCD method and CCF method), the other is no filter washing, the use of activated carbon adsorption from cyanide gold recovery in the pulp-free over
Cyanide carbon filter pulp process (CIP method and CIL method). Centrifugal equipment cyanidation gold extraction process by processing different materials was divided into two kinds: one is dealing with flotation gold concentrates or handling amalgamation tailings re-election
Cyanidation plant. Using this process are mostly large state-owned mines. Such as Hebei Jinchangyu; Liaoning Wulong, Henan Yu Yang Village; Zhaoyuan, Metro, coke home, Sanshandao centrifugal machine . The other is dealing with mud
Oxidation of ore, with all the mud mixing cyanide gold extraction plant. Such as Jilin trench; Heilongjiang unity ditch; Xinqiao gold and silver mines and other mines in Anhui. In the early 1930s have begun to use the cyanidation of gold
Process. Chinkuashih gold in the 1936 Taiwan 1938, the use of cyanide - zinc replacement processes to extract gold, gold 150,000 annual two. After 60 years of the 20th century, in order to meet national
Economic development, vigorously develop the mineral production of gold in some mines have intermittent mechanical agitation cyanidation gold extraction process and the continuous mixing of gold cyanidation process of gold cyanidation replace the filtration process
. In 1967, the first in Shandong Zhaoyuan Gold Mountain gold plant selection and exquisite mechanical agitation to achieve a continuous production of gold cyanidation process, cyanidation of gold from 70% to 93.23%, from continuous mechanical agitation
Cyanidation gold recovery machine extraction process in the country's major gold speedy promotion. 1970 Pension Jinchangyu gold cyanidation plant Wulong gold deposit in 1977 have been put into operation, then the domestic and gradually put into operation a number of machines
Mechanical agitation cyanidation plant, cyanidation gold extraction process has entered a new stage of development. The continuous development of gold production and gold resources to rapidly develop, since the 1980s, the gold from the clay of high
A significant increase in oxidized ore, the development of such ore mixing cyanide leaching of the whole soil studies, and unity in Heilongjiang to build a ditch on handling 500t gold ore cyanidation plant, put students in 1983
Production. Since then, the whole process of gold cyanidation mud increasingly promote the use, worked in Henan, Jilin, Hebei, Shanxi, Inner Mongolia, gold extraction plant using this method. At the same time, to address the muddy oxidation
Ore in the dense solid-liquid separation filter the difficulties, in November 1979, Changchun Institute of gold began to rally ditch gold ore-free filter charcoal slurry gold extraction process, for the last two years
Pilot study was successful. On this basis, in August 1984 Spirit Lake gold mine in Henan, China-made equipment designed and built using the first day of China's handling of ore CIP 50t gold extraction plant. Make
China cyanidation gold extraction process took a big step forward. CIP gold extraction process to become oxidized ore processing shale rock gold mine gold on the property is one important way. Since then in Jilin, Henan, in
Mongolia, Shaanxi and other places built CIP gold extraction plant. The end of 1984, Ministry of Metallurgical Industry Bureau to promote the gold of gold CIP process in our application, porting advanced foreign technology and equipment, and
David McKee U.S. companies in Shaanxi Province Xitong valley gold, gold Zhangjiakou, Hebei Province, were built a daily ore processing 250t (West tong valley) and a 450t (Zhangjiakou) carbon dip
Gold extraction plant. According to the survey Zhangjiakou gold reached 93.54% (1988 CIP recovery of 90.25%) of the recovery. Technological innovations based on scientific experimental research vigorously, so that China's gold production technology
Technical level has improved greatly. Such as study Jinchangyu gold zinc instead of zinc wire replacement gold clay success of the exchange rate of 99.89%, significantly improved grade gold-bearing clay, zinc consumption of the original zinc wire replacement
Of 2.2kg / t down to 0.6kg / t, a significant reduction in production costs. Then in Zhaoyuan, coke home, new city, promote the use of mines Wulong also made other significant effects. Low-grade oxide ore heap leaching
In Dandong Hushan gold test is successful, one after another in Henan, Hebei, Liaoning, Yunnan, Hubei, Inner Mongolia, Heilongjiang, Jilin and Shaanxi provinces to promote the use of economic effect is obvious for the low
Grade oxide ores opened the way for the development and utilization. According to incomplete statistics, China's current production using heap leaching gold production to reach over million ounces (in Henan Province heap leach gold production accumulated 1.3
Million ounces), but compared with developed countries, China's small-scale heap leaching, typically 1 × 103 ~ 3 × 103t / heap, million t / heap less, technically there is a big gap, 1988 Shaanxi Bai
King County, two-ton heap leach gold mine large-scale field production, and achieved encouraging results (ore grade of 1.5g / t). Advanced foreign technology and equipment introduction and assimilation (such as the United States, effective thickener, double-screw
Spin-mixing tank leaching, Japan's Mars pumps, belt filter, etc.), so that China's gold production at the level of equipment and technical level, there has been further improved, while also promoting our Huang Jinsheng
Production equipment to high efficiency, large-scale, automated direction. Of gold in thiourea, thiosulphate of gold, pre-oxidizing bacteria leaching, pressure leaching catalyst, resin and other new science and technology
Research, new advances in recent years. 1979 Changchun Gold Research Institute of gold thiourea trial is successful, and in Guangxi in 1984 built a long day dealing with mine water flotation gold concentrates 10
~ 20t of gold shop thiourea (1987 through ministerial identification). Although other processes in the pilot study stage and is preparing to plant operation, sufficient to show China's gold extraction technology has been developed to a new water
Level.
The extraction and finished a few basic processes such as smelting. China's gold mine existing cyanidation plant basically two types of gold extraction process used, one is a thick continuous counter-current washing machine, set with zinc powder
For settling the so-called conventional gold recovery by cyanidation gold extraction process (CCD method and CCF method), the other is no filter washing, the use of activated carbon adsorption from cyanide gold recovery in the pulp-free over
Cyanide carbon filter pulp process (CIP method and CIL method). Centrifugal equipment cyanidation gold extraction process by processing different materials was divided into two kinds: one is dealing with flotation gold concentrates or handling amalgamation tailings re-election
Cyanidation plant. Using this process are mostly large state-owned mines. Such as Hebei Jinchangyu; Liaoning Wulong, Henan Yu Yang Village; Zhaoyuan, Metro, coke home, Sanshandao centrifugal machine . The other is dealing with mud
Oxidation of ore, with all the mud mixing cyanide gold extraction plant. Such as Jilin trench; Heilongjiang unity ditch; Xinqiao gold and silver mines and other mines in Anhui. In the early 1930s have begun to use the cyanidation of gold
Process. Chinkuashih gold in the 1936 Taiwan 1938, the use of cyanide - zinc replacement processes to extract gold, gold 150,000 annual two. After 60 years of the 20th century, in order to meet national
Economic development, vigorously develop the mineral production of gold in some mines have intermittent mechanical agitation cyanidation gold extraction process and the continuous mixing of gold cyanidation process of gold cyanidation replace the filtration process
. In 1967, the first in Shandong Zhaoyuan Gold Mountain gold plant selection and exquisite mechanical agitation to achieve a continuous production of gold cyanidation process, cyanidation of gold from 70% to 93.23%, from continuous mechanical agitation
Cyanidation gold recovery machine extraction process in the country's major gold speedy promotion. 1970 Pension Jinchangyu gold cyanidation plant Wulong gold deposit in 1977 have been put into operation, then the domestic and gradually put into operation a number of machines
Mechanical agitation cyanidation plant, cyanidation gold extraction process has entered a new stage of development. The continuous development of gold production and gold resources to rapidly develop, since the 1980s, the gold from the clay of high
A significant increase in oxidized ore, the development of such ore mixing cyanide leaching of the whole soil studies, and unity in Heilongjiang to build a ditch on handling 500t gold ore cyanidation plant, put students in 1983
Production. Since then, the whole process of gold cyanidation mud increasingly promote the use, worked in Henan, Jilin, Hebei, Shanxi, Inner Mongolia, gold extraction plant using this method. At the same time, to address the muddy oxidation
Ore in the dense solid-liquid separation filter the difficulties, in November 1979, Changchun Institute of gold began to rally ditch gold ore-free filter charcoal slurry gold extraction process, for the last two years
Pilot study was successful. On this basis, in August 1984 Spirit Lake gold mine in Henan, China-made equipment designed and built using the first day of China's handling of ore CIP 50t gold extraction plant. Make
China cyanidation gold extraction process took a big step forward. CIP gold extraction process to become oxidized ore processing shale rock gold mine gold on the property is one important way. Since then in Jilin, Henan, in
Mongolia, Shaanxi and other places built CIP gold extraction plant. The end of 1984, Ministry of Metallurgical Industry Bureau to promote the gold of gold CIP process in our application, porting advanced foreign technology and equipment, and
David McKee U.S. companies in Shaanxi Province Xitong valley gold, gold Zhangjiakou, Hebei Province, were built a daily ore processing 250t (West tong valley) and a 450t (Zhangjiakou) carbon dip
Gold extraction plant. According to the survey Zhangjiakou gold reached 93.54% (1988 CIP recovery of 90.25%) of the recovery. Technological innovations based on scientific experimental research vigorously, so that China's gold production technology
Technical level has improved greatly. Such as study Jinchangyu gold zinc instead of zinc wire replacement gold clay success of the exchange rate of 99.89%, significantly improved grade gold-bearing clay, zinc consumption of the original zinc wire replacement
Of 2.2kg / t down to 0.6kg / t, a significant reduction in production costs. Then in Zhaoyuan, coke home, new city, promote the use of mines Wulong also made other significant effects. Low-grade oxide ore heap leaching
In Dandong Hushan gold test is successful, one after another in Henan, Hebei, Liaoning, Yunnan, Hubei, Inner Mongolia, Heilongjiang, Jilin and Shaanxi provinces to promote the use of economic effect is obvious for the low
Grade oxide ores opened the way for the development and utilization. According to incomplete statistics, China's current production using heap leaching gold production to reach over million ounces (in Henan Province heap leach gold production accumulated 1.3
Million ounces), but compared with developed countries, China's small-scale heap leaching, typically 1 × 103 ~ 3 × 103t / heap, million t / heap less, technically there is a big gap, 1988 Shaanxi Bai
King County, two-ton heap leach gold mine large-scale field production, and achieved encouraging results (ore grade of 1.5g / t). Advanced foreign technology and equipment introduction and assimilation (such as the United States, effective thickener, double-screw
Spin-mixing tank leaching, Japan's Mars pumps, belt filter, etc.), so that China's gold production at the level of equipment and technical level, there has been further improved, while also promoting our Huang Jinsheng
Production equipment to high efficiency, large-scale, automated direction. Of gold in thiourea, thiosulphate of gold, pre-oxidizing bacteria leaching, pressure leaching catalyst, resin and other new science and technology
Research, new advances in recent years. 1979 Changchun Gold Research Institute of gold thiourea trial is successful, and in Guangxi in 1984 built a long day dealing with mine water flotation gold concentrates 10
~ 20t of gold shop thiourea (1987 through ministerial identification). Although other processes in the pilot study stage and is preparing to plant operation, sufficient to show China's gold extraction technology has been developed to a new water
Level.
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