Device and process for preparation of iron salt through comprehensive utilization of copper smelting tailings

Abstract

The invention discloses a device and process for preparation of iron salt through comprehensive utilization of copper smelting tailings. The equipment provided by the invention comprises an open reaction still with a stirring function, a solution lifting pump, a filter press and a solution storage tank. The device and process for preparation of iron salt through the comprehensive utilization of the copper smelting tailings have the benefits as follows: the tailings generated by copper smelting and part of waste iron chips are subjected to a reaction with dilute sulphuric acid according to a certain proportion, the generated solid liquid mixture is subjected to separation again, the solid slag is subjected to classification treatment, such as returning to a smelting furnace or selling in other areas, according to the contents of valuable metals such as copper, a certain amount of waste iron ingots or iron chips is added in the separated liquid for a sufficient reduction reaction, and after that, the products are added into a waste water treatment system to substitute for iron salt for use. The device and process for preparation of iron salt through comprehensive utilization of copper smelting tailings are characterized in that through the comprehensive utilization of the waste tailings slag and various scrap irons, the consumption of iron salt in the waste water treatment process is greatly reduced, changing wastes into valuables is realized, and the effects of reducing cost and increasing efficiency are realized; besides, the iron salt is produced completely by adopting theprocess, the dependence on outsourced products is reduced, and the cost is reduced.

Description

technical field [0001] The present invention relates to a comprehensive utilization device and process, in particular to a device process for comprehensive utilization of copper smelting tailings to prepare iron salt. Background technique [0002] This region uses Fe 2 SO 4 ·7H 2 O conducts advanced treatment of wastewater, and iron ions are hydrolyzed to generate Fe(OH) 3 Colloid, Fe(OH) 3 Colloidal particles are charged, using the adsorption of charged particles to purify water and remove low-concentration arsenic and other heavy metals in wastewater. Although the removal effect is better, the consumption of iron salts in waste acid wastewater treatment is high, and copper smelting tailings and waste iron Chips, etc. have not been efficiently utilized, and are more dependent on purchased products, and the overall equipment and operating costs are relatively high. Contents of the invention [0003] The purpose of the invention is to develop a high-efficiency and low-...

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Problems solved by technology

[0002] This region uses Fe 2 SO 4 ·7H 2 O conducts advanced treatment of wastewater, and iron ions are hydrolyzed to generate Fe(OH) 3 Colloid, Fe(OH) 3 Colloidal particles are charged, using the adsorption of charged particles to purify water and remove low-concentration arsenic and other heavy metals in wastewater. Although the removal effect is better, the consumption of iron salts in waste acid wastewater treatment is high, and copper smelting tailings and waste iron Chips, etc. have not been efficiently utilized, rely more on purchased products, and the overall equipment and operating costs are relatively high

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