Process for producing cubic crystal antimony white from low-grade complex lead-antimony polymetallic ores

A polymetallic ore and cubic crystal technology, which is applied in the field of hydrometallurgy to achieve the effects of reducing waste discharge, protecting the ecological environment and improving resource utilization.

Active Publication Date: 2014-03-05
青海省化工设计研究院有限公司
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Problems solved by technology

[0007] Aiming at the problems existing in the production of cubic antimony white from low-grade complex lead-antimony polymetallic ores at present, and further improving the utilization rate of low-grade complex lead-antimony polymetallic ores, the present invention is proposed

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  • Process for producing cubic crystal antimony white from low-grade complex lead-antimony polymetallic ores

Examples

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example 1

[0011] Example 1: Weigh 100Kg of 150-mesh low-grade lead-antimony complex polymetallic ore powder (containing 14.56% antimony) and put it directly into the reactor, add 300kg of water to stir, and feed 19Kg of chlorine gas to the bottom of the reactor. The flow rate is first fast and then slow, and the temperature Control it above 90°C, react for 3.5 hours, lower the temperature below 50°C and filter with a plate and frame filter press, the reaction equation of the leaching process:

[0012] Sb 2 S 3 +3Cl 2 =2SbCl 3 +3S

[0013] SbCl 3 +Cl 2 =SbCl 5

[0014] 3SbCl 5 +Sb 2 S 3 =5SbCl 3 +3S

[0015] The leaching slag was treated separately, and 350L of the leaching solution was obtained and put into an enamel reaction kettle for stirring. At room temperature, 5 times the amount of water of the leaching solution was added for hydrolysis, and the hydrolysis time was 2 hours. Add 1.5 times the weight of saturated sodium chloride solution to the weight of oxyantimony, s...

example 2

[0022] Example 2. Weigh 100Kg of 200-mesh low-grade lead-antimony complex polymetallic ore powder (containing 10.58% antimony) and put it directly into the reactor, add 500kg of water to stir, and feed 14Kg of chlorine gas to the bottom of the reactor. The flow rate is first fast and then slow, and the temperature Control the temperature above 90°C, react for 4.5 hours, lower the temperature to below 50°C and filter with a plate and frame filter press, and the reaction equation of the leaching process is the same as in Example 1.

[0023] The leaching slag was treated separately, and 510L of the leaching solution was obtained, which was stirred in an enamel reaction kettle. At room temperature, 9 times the weight of the leaching solution was added for hydrolysis, and the hydrolysis time was 0.5h. Add 3 times the weight of saturated sodium chloride solution to the weight of antimony oxychloride, stir and soak for 6 hours to remove lead, separate by pressure filtration, and then ...

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Abstract

The invention belongs to the technical field of hydrometallurgy, and in particular relates to a process for producing cubic crystal antimony white from low-grade complex lead-antimony polymetallic ores. The low-grade complex lead-antimony polymetallic ores (with antimony content of lower than 14.56 percent) are used as a raw material, and the cubic crystal antimony white is obtained by processes of extracting antimony in a chlorination leaching way to obtain an antimony chloride solution, performing hydrolysis to remove impurities, dropwise adding ammonia water for neutralization, adding a crystal form conversion agent and the like. According to the process, chlorine is used as a leaching agent, so that the advantages of antimony pentachloride serving as the leaching agent are achieved, the introduction of metallic impurity ions is also avoided, sulfur dioxide gas pollution and dust pollution are avoided, and the process is low in energy consumption and production cost and high in recovery rate and product quality; resources can be completely and comprehensively utilized, the resource utilization rate can be increased, waste emission can be reduced, and the ecological environment can be protected; the process is significant particularly for the treatment of low-grade complex antimony ores.

Description

1. Technical field [0001] The invention belongs to the technical field of hydrometallurgy, in particular to a process for producing cubic crystal antimony white from low-grade lead-antimony complex polymetallic ore. 2. Background technology [0002] Low-grade antimony ore has complex mineral composition, many associated non-ferrous metals, high degree of intercalation, difficult separation, low recovery rate of ore dressing, and difficult separation of various valuable metals. At present, it is difficult to develop and utilize such resources. There are also small-scale mining and utilization of idle resources, but there are problems such as high energy consumption, high cost, and serious pollution. [0003] Cubic antimony white (sb 2 o 3 ) production methods are divided into fire method and wet method. At present, the fire method is the main method, and its output accounts for more than 95% of the total output of antimony white. The raw material for pyrochemical productio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B30/02C22B3/04
CPCY02P10/20
Inventor 赵增兵牛桂然唐宏学王文侠
Owner 青海省化工设计研究院有限公司
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