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Technological method for cleaning and efficiently treating arsenic matte

A process method and arsenic matte technology, applied in the fields of metallurgy and beneficiation, can solve the problems of complex alkaline leaching process, high anti-corrosion requirements, difficult waste gas treatment, etc., and achieve simple and fast reaction process, low production cost, and metal separation. thorough effect

Active Publication Date: 2016-10-26
KUNMING METALLURGY INST
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Problems solved by technology

However, the conventional acid leaching method has the disadvantages of long reaction time and low copper leaching rate; the ammonia leaching method involves the use of ammonia gas, high anti-corrosion requirements, and difficult waste gas treatment; the alkaline leaching method has a complicated process and equipment investment. Big

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  • Technological method for cleaning and efficiently treating arsenic matte

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Comparison scheme
Effect test

Embodiment approach 1

[0033] The arsenic matte is crushed with a jaw crusher, and then the crushed arsenic matte is finely ground to obtain arsenic matte powder with a particle size of 0.1mm containing 24.53% copper, 30.42% lead, and 12.02% arsenic ; then according to the liquid-solid ratio of 3:1, adding a concentration of 200g / L sulfuric acid solution to form a slurry; adding the slurry into the autoclave, feeding oxygen 10 g / L, and controlling the pressure to 0.8MPa and the leaching temperature to 75 o C. Under the conditions of leaching time of 60min and stirring speed of 200r / min, low-temperature pressurized oxidative acid leaching reaction is carried out on the ore pulp. After the leaching reaction time is reached, the ore pulp after low-temperature pressurized oxidative acid leaching is filtered to obtain a leaching solution containing copper and arsenic, and the leaching slag contains 0.56% copper; the obtained leaching slag is washed and then enters the subsequent process to recover the lea...

Embodiment approach 2

[0035] The arsenic matte is crushed with a jaw crusher, and then the crushed arsenic matte is finely ground to obtain arsenic matte powder with a particle size of 0.08mm containing 14.52% copper, 24.55% lead, and 14.09% arsenic ; then according to the liquid-solid ratio of 4:1, adding a concentration of 100g / L sulfuric acid solution to form a slurry; adding the slurry into the autoclave, feeding air 10g / L, and controlling the pressure to be 0.6MPa and the leaching temperature to be 85 o C. Under the conditions of leaching time of 90min and stirring speed of 300r / min, low-temperature pressurized oxidative acid leaching reaction is carried out on the ore pulp. After the leaching reaction time is reached, the ore pulp after low-temperature pressurized oxidative acid leaching is filtered to obtain a leaching solution containing copper and arsenic, and the leaching slag contains 0.36% copper; the obtained leaching slag is washed and then entered into a subsequent process to recover ...

Embodiment approach 3

[0037] The arsenic matte is crushed with a jaw crusher, and then the crushed arsenic matte is finely ground to obtain arsenic matte powder with a particle size of 0.05mm containing 34.43% copper, 7.36% lead, and 17.34% arsenic Then according to the liquid-solid ratio is 3:1 adding concentration is that 170g / L sulfuric acid solution forms ore slurry; Ore slurry is added in the autoclave, feeds the mixed gas 10g / L of oxygen and air in proportion 1:1, and control pressure is 0.2MPa, leaching temperature is 100 o C. Under the conditions of leaching time of 60min and stirring speed of 700r / min, low-temperature pressurized oxidative acid leaching reaction is carried out on the ore pulp. After the leaching reaction time is reached, the slurry after low-temperature pressurized oxidative acid leaching is filtered to obtain a leaching solution containing copper and arsenic, and the leaching slag contains 0.61% copper; the obtained leaching slag is washed and then enters the subsequent p...

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Abstract

The invention discloses a technological method for cleaning and efficiently treating arsenic matte. The technological method comprises steps of crushing, grinding, low-temperature acid leaching, high-temperature arsenic precipitating and the like. The technological method is a wet process, is low in energy consumption, is less in environmental pollution, is high in degree of automation and is high in production efficiency. The technological method is simple and quick in reaction process and is high in selectivity. Copper in arsenic matte can be efficiently leached, so that metal is separated completely. Compared with a current wet process for treating the arsenic matte, a copper leaching process can be quickly realized at a relatively low leaching temperature within relatively short time. The arsenic removal effect is good, and an arsenic removal rate is higher than 99%. Arsenic in the arsenic matte is recycled in the form of arsenic slag, so that secondary pollution of arsenic is avoided. The technological method has the advantages of being high in metal recovery rate, low in production cost, good in economical effect, high in adaptability to raw materials, clean, environmentally friendly and the like.

Description

technical field [0001] The invention relates to the technical field of metallurgy and mineral processing, in particular to a process method for cleanly and efficiently treating arsenic matte. Background technique [0002] With the rapid development of my country's economy, the supply and demand of high-quality mineral resources are becoming increasingly tense, and complex and difficult-to-handle resources are widely used in production. Lead concentrate with high arsenic and impurities will produce a large amount of arsenic matte (also known as sub-matte) as a by-product during the lead smelting process. This arsenic matte contains valence metals copper, lead, silver, gold, bismuth and indium , impurity elements arsenic and sulfur. Processing arsenic matte to recover its valuable metals has great economic value, but the existence of element arsenic makes the processing of arsenic matte face severe technical and environmental pressures. At present, smelting enterprises at ho...

Claims

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Application Information

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IPC IPC(8): C22B15/00C22B1/00C22B3/08C22B3/44C25C1/12
CPCC22B1/00C22B3/08C22B3/44C22B15/0071C22B15/0089C25C1/12Y02P10/20
Inventor 李小英翟忠标杨勇杨大锦刁微之闫森张水南梁智
Owner KUNMING METALLURGY INST
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