Antimony application
Antimony is finding use in semiconductor technology for making infrared detectors, diodes and Hall-effect devices. It greatly increases the hardness and mechanical strength of lead. Batteries, antifriction alloys, type metal, small arms and tracer bullets, cable sheathing, and minor products use about half the metal produced. Compounds taking up the other half are oxides, sulfides, sodium antimonate, and antimony trichloride. These are used in manufacturing flame-proofing compounds, paints ceramic enamels, glass, and pottery. Antimony compounds are prominent fire retardants found in many commerical and domestic products. Certain alloys are valuable for use in solders and ball bearings. An emerging application is the use of antimony in microelectronics.
Antimony ore dressing method
Antimony ore dressing method, basically have hand picking, re-election, the flotation methods. Among them, to adopt flotation of concentrator for more, followed by hand picking, use heavy optional choose factory is less. A few antimony ore flotation process by using single concentrator, most antimony ore concentrator adopt combination process, such as the hand picking - flotation process, hand picking - re-election - flotation process.
Antimony smelting method
Antimony smelting method has dominated and wet two kinds, mainly is sulfide ore (stibnite), the second is oxide minerals and complex antimony lead (mainly brittle sulfur antimony lead). These ore dressing method usually takes rich natural ores and selected concentrates smelting.
(1) the dominated by refined antimony sulfide ore volatile roasting or volatile smelting, make Sb2S3 into Sb2O3 (known as antimony oxygen), then after reduction smelting and refining, as a metal antimony. Still can use precipitation method directly production coarse antimony smelting.
(2) there are four oxygen antimony production methods: (1) sulfide antimony ore blocks the volatilization of roasting, (2) sulfide antimony ore concentrate flash volatile roasting, Antimony sulfide ore concentrate balanced-blast furnaces (volatile smelting, Antimony sulfide ore concentrate WTP eddies furnace volatile smelting.
(3) holds refining reduction smelting and volatile roasting and volatile in oxygen antimony smelting rarely, match with impurity in coal and a small amount of soda ash (Na2CO3), in reverberatory reduction smelting into thick antimony within. If you need refining, can continue to join soda, alkali after molten compressed air drum into antimony liquid, then alkali refining.
(4) electrolytic refining methods adopted electrolysis refining, can achieve high purity of antimony and recovery of coarse antimony precious metals and other valuable metals.
(5) method is suitable for processing rich ore precipitation smelting, unfavorable processing of lead ore. Small-scale production multi-purpose crucible, mass production by reverberatory furnace, some factory with the electric stove.
(6) with a blast furnace oxidizing sanyanghuaerti melting into thick antimony smelting blast furnace range, big, can handle refractory for ore grade ores, not strict, also allows oxidation ore mixed with a part of sulfide ore. Melting with iron ore, flux, with coke of limestone for reductant, and output coarse antimony.
(7) complex antimony smelting lead ore: this is a difficult smelting ore types, guangxi giant with crispy sulfur antimony lead for raw material, adopting fluidezed bed roasting, reverberatory reduction smelting, what produce thick alloy converting volatile antimony, antimony soot reduction smelting refining production high-lead antimony, pure lead on electrolysis production of pure lead method. After more than 10 years of production practice, has become increasingly mature for complex antimony lead ore processing has accumulated valuable experience from it.
Antimony Processing Plant
SBM has designed many antimony processing plant, which have been exported to many countries. Below is SBM designed antimony processing plant for mining stibnite ore and get antimony and gold.
During operation, the plant achieved very good recoveries of gold and antimony with gold recovery ranging between 89-91%. The unit processes employed for gold and antimony recovery from ore include:
- Two stage crushing plant: Our antimony crushing plant includes jaw crusher as primary crusher and cone crusher as secondary crusher.
- Conventional ball mill: Ball mill is the suitable grinding mill for grinding antimony. Beside ball mill, SBM vertical antimony mill can be used as antimony grinding mill.
- Cyclone classification with gravity separation on the circulating load
- Float cells
- Carbon in pulp (CIP) adsorption
This antimony processing plant is currently configured for a throughput of around 40,000 TPA - a capacity which reflected the fact that very high-grade ore was processed. However, the existing crushing units of the plant have a capacity of around 100,000 TPA. Accordingly, through the installation of additional tanks and ball mill, the plant's throughput can be increased to levels approaching capacity without the need for extensive redesigning. The tailings dam used during previous production can also be expanded to deal with increased plant capacity.
This antimony processing plant operated for a period of around 6 months before Chase Minerals was forced into administration following the 1998 stock market crash. The plant was subsequently operated for another 15 months by Fiminston Mining between 2001-3.
This infrastructure will significantly reduce the capital expenditure required to bring high-grade gold deposits identified along the extent of the Blue Spec and Red Ribbon Shears into production in a shorter period than a greenfield project.
Relative Solutions
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