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Method for comprehensively processing stibium smelt arsenic alkaline residue and producing colloid antimony peroxide

A comprehensive treatment, arsenic-alkali slag technology, applied in the field of environmental engineering, can solve the problems of high dust concentration, complex process, unsatisfactory traditional wet treatment effect, etc.

Inactive Publication Date: 2009-08-19
CENT SOUTH UNIV
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Problems solved by technology

[0005] In order to overcome the deficiencies of the existing treatment methods, including the existence of pyrotechnics due to foaming, high dust concentration during refining and reverberatory furnace antimony, serious environmental pollution, and "boiling" phenomenon after the furnace charge is melted, which poses a threat to the safety of the operation; traditional The wet treatment effect is unsatisfactory, the process is complex, and it is easy to cause secondary pollution. The present invention proposes a wet treatment process for arsenic-alkali slag, which recovers antimony resources while controlling arsenic pollution, and prepares colloidal antimony pentoxide. so as to achieve the recycling of resources

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  • Method for comprehensively processing stibium smelt arsenic alkaline residue and producing colloid antimony peroxide
  • Method for comprehensively processing stibium smelt arsenic alkaline residue and producing colloid antimony peroxide
  • Method for comprehensively processing stibium smelt arsenic alkaline residue and producing colloid antimony peroxide

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Embodiment 1

[0053] (1) Properties of arsenic-alkali slag

[0054] The arsenic-alkali slag used in the embodiment of the present invention (attached figure 2 ) is obtained from the Xingxing Antimony Industry in Xikuangshan, Hunan Province. Due to long-term exposure to the air, it absorbs a large amount of water and is difficult to break. Therefore, the arsenic-alkali slag must be dried first. During the laboratory research, the arsenic-alkali slag was dried, crushed, and ground to a size below 0.3 mm for later use. Chemical analysis shows that the percentages of arsenic and antimony are 6.37% and 33.32%, respectively, of which trivalent antimony is 17.37%, elemental antimony is 4.55%, and pentavalent antimony is 11.4%.

[0055] (2) Flooding

[0056] Under the conditions of controlling the liquid-solid ratio to 6:1, the temperature at 40°C, the stirring speed at 400rpm, and the leaching time of 40 minutes, the arsenic-alkali slag was leached in water. The antimony leaching rate was 4.09%...

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Abstract

The invention relates to a method for processing antimony smelting slag, in particular to a method for comprehensively processing antimony smelting arsenic-alkali slag and preparing colloidal antimony pentoxide. The method mainly comprises four processes including water leaching, acid leaching, hydrolysis and colloid making. The antimony oxide obtained from hydrochloric acid leaching and hydrolyzing adopts the oxidation reflux process to prepare the colloidal antimony pentoxide. In the method, the arsenic-alkali slag is subjected to wet processing, antimony resources are recovered while treating the antimony pollution and the colloidal antimony pentoxide is prepared, thereby realizing the recycling of the resources.

Description

technical field [0001] The invention relates to a treatment method for antimony smelting slag, in particular to a method for comprehensively treating antimony smelting arsenic-alkali slag and preparing colloidal antimony pentoxide, which belongs to the field of environmental engineering. Background technique [0002] Arsenic-alkali slag is a solid waste produced by pyrochemical antimony plus alkali to remove arsenic. The main component of arsenic-alkali slag is sodium arsenate (Na 3 AsO 4 ), sodium antimonite (Na 3 SbO 3 ) and excess sodium carbonate and metal antimony, in addition to a small amount of SiO 2 , CaO, Al 2 o 3 , S, etc., containing 30-40% of Sb, 3-9% of As, and 20-30% of total alkalinity. Every 10,000 tons of refined antimony will produce 800-1,000 tons of arsenic-alkali slag. At present, the stockpile of arsenic-alkali slag in the country has reached more than 50,000 tons, and the annual production is about 50,000 to 10,000 tons. Large and medium-sized...

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Application Information

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IPC IPC(8): C22B7/04C22B30/02
CPCY02P10/20
Inventor 柴立元王云燕彭兵闵小波杨志辉王海鹰王建强
Owner CENT SOUTH UNIV
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