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Comprehensive utilization method for recycling industrial hazardous wastes

A technology for resource utilization and hazardous waste, applied in chemical instruments and methods, selenium/tellurium compounds, photographic technology, etc., can solve the problems of single solution of metal lead recovery technology, waste of secondary resources of copper smelting smoke, etc., and achieve easy governance. , The effect of high equipment utilization and stable product quality

Inactive Publication Date: 2019-07-12
福建铭祥金属材料有限公司
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Problems solved by technology

[0004] Chinese patent (publication number: CN107815555 A) discloses a process for recovering lead from copper smelting dust, which uses copper smelting dust to undergo water-slurry leaching, blast furnace smelting, lead alloy fire refining, lead alloy electrolysis, and alkali melting extraction In the lead process, lead ingots are prepared, and the lead in the copper smelting dust is recovered; this method only solves the recovery technology of metallic lead in the copper smelting dust, and recovers the metallic lead, but does not recycle other valuable metals. If the recovery of other valuable metals is not continued, the waste of secondary resources such as copper smelting smoke and dust will be caused

Method used

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  • Comprehensive utilization method for recycling industrial hazardous wastes
  • Comprehensive utilization method for recycling industrial hazardous wastes

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Embodiment 1

[0034] see figure 1 , a method for comprehensive utilization of industrial hazardous waste resources, comprising the following steps;

[0035] (1) Ingredients: a) According to the chemical composition of non-ferrous metallurgical hazardous waste, copper-containing hazardous waste, and lead-containing hazardous waste, use non-ferrous metallurgical hazardous waste or copper-containing hazardous waste or lead-containing hazardous waste to make charge, and the prepared charge contains Bismuth (Bi) 1-10%, tin (Sn) 0.5-5%, copper (Cu) 1-10%, lead (Pb) 8-20%; b) Add iron, silicon and Calcium material, the material ratio is: iron: silicon: calcium = 20-40: 15-25: 10-20, the silicon is silicon dioxide, and the calcium is lime.

[0036] (2) Group making: Press the prepared charge in the pellet making machine into charge balls or charge bricks with a relative density of 50-60%. The diameter of the charge balls is φ10-15cm; the size of the charge bricks is 6 ×12×24cm, the prepared furna...

Embodiment 2

[0053] The difference between Embodiment 2 and Embodiment 1 is: (1) Ingredients: a) According to the chemical composition of non-ferrous metallurgical hazardous waste, copper-containing hazardous waste and lead-containing hazardous waste, non-ferrous metallurgical hazardous waste and copper-containing hazardous waste and / or Hazardous lead waste is mixed in a certain proportion to make charge, and the prepared charge contains bismuth (Bi) 1-10%, tin (Sn) 0.5-5%, copper (Cu) 1-10%, lead (Pb) 8-20% %; b) According to the chemical composition of the charge, iron, silicon and calcium materials are added in proportion, and the material ratio is: iron: silicon: calcium = 20-40: 15-25: 10-20.

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Abstract

The invention relates to a comprehensive utilization method for recycling industrial hazardous wastes. The method is characterized in that copper-containing hazardous wastes, lead-containing hazardouswastes and nonferrous metallurgical hazardous wastes are mixed and prepared into furnace charge, the furnace charge is added with additives such as iron, silicon, and calcium to be subjected to briquetting, and then copper matte and a lead-bismuth alloy are prepared through reduction smelting in a shaft furnace; electrolytic lead is prepared through copper removal and tin removal of the lead-bismuth alloy through electrolysis, and coarse bismuth is prepared by smelting electrolytic anode mud through a converter, specifically, in the process of preparing refined bismuth by pyrorefining, gold,silver, antimony and tellurium are recovered in the form of slag and smoke dust; and the electrolytic lead obtained by electrolysis is smelted by a pyrometallurgical method to obtain an electrolytic lead ingot. According to the method, comprehensive utilization of valuable metals in the copper-containing hazardous wastes, the lead-containing hazardous wastes and the nonferrous metallurgical hazardous wastes, wastewater zero discharge in the process and standard discharge of tail gas in the smelting process are achieved, and the method is a novel environment-friendly resource-oriented process.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of industrial hazardous waste, in particular to the comprehensive utilization technology of non-ferrous metallurgical hazardous waste, copper-containing and lead-containing hazardous waste and resource utilization. Background technique [0002] Toxic and hazardous wastes produced in the industrial field are collectively referred to as industrial hazardous wastes. Hazardous wastes in the industrial field often contain many valuable metal elements. Such as copper smelting dust, copper smelting waste residue, non-ferrous metal smelting dust, electroplating tank bottom sludge and wastewater sludge and other industrial hazardous wastes, containing copper, lead, bismuth, tin, gold, silver, zinc, antimony, tellurium and other valuable metal element. However, under the existing technical conditions, although industrial enterprises have reduced the total amount of hazardous waste dischar...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B15/00C22B13/02C22B30/06C25C1/18C22B30/02C01B19/00
CPCC01B19/004C22B7/001C22B13/025C22B15/0052C22B30/02C22B30/06C25C1/18Y02P10/20
Inventor 兰箭苏益彬吴绥平丁峰
Owner 福建铭祥金属材料有限公司
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