Treatment method for oxygen pressure leaching tailing slag

Abstract

The invention discloses a treatment method for oxygen pressure leaching tailing slag. The treatment method comprises the following steps that collected tailing slag raw materials are transported into a bin, and the tailing slag collected into the bin is subjected to stacking and drying treatment; the stacked and dried tailing slag raw materials are transported into a crushing device through a conveyor belt to be crushed, and the crushed materials can increase the speed rate of a subsequent inner-furnace reaction; the crushed tailing slag is mixed with other materials containing little water and then passes through another conveyor belt to conduct material mixing and further dehydration treatment; and the dehydrated tailing slag is subjected to dosing, and the high iron and high sulphur characteristics of the tailing slag approaches that of sulfur-gold sand. According to the treatment method for the oxygen pressure leaching tailing slag, the wasted slag is recycled, the economic effect is obvious, original production is not influenced, the cost is greatly saved, the utilization rate of the waste materials is increased, resource waste is reduced, and environment pollution is relieved.

Description

technical field [0001] The invention relates to the field of industrial technology, in particular to a treatment method for oxygen pressure leaching tailings slag. Background technique [0002] At present, lead smelting mainly adopts the "bottom blowing furnace-reduction furnace-fuming furnace" system. After the reduction furnace replaces the blast furnace, the slag type tends to be a high-iron slag type. The slag is mainly made of sulfur gold sand, and sulfur gold sand needs to be added to supplement iron when making ingredients. and sulfur. Pyrochemical lead smelting ingredients generally control the lead grade at about 50%, the content of iron and zinc in the mixed ore is generally 6-8%, control FeO:SiO 2 =1.8~2.2, based on an annual output of 100,000 tons of crude lead, under the condition of full production per month, the amount of sulfur gold sand is about 500~700 tons, and the production cost is relatively high. The zinc concentrate oxygen pressure leaching tailings...

AI Technical Summary

Problems solved by technology

Pyrochemical lead smelting ingredients generally control the lead grade at about 50%, the content of iron and zinc in the mixed ore is generally 6-8%, control FeO:SiO 2 =1.8~2.2, based on the calculation of an annual output of 100,000 tons of crude lead, under the condition of full production per month, the amount of sulfur gold sand is about 500~700 tons, and the production cost is relatively high

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