Operation method for manufacturing high-iron low-silicon slag through copper oxygen enrichment double side blow smelting furnace

Abstract

The invention provides an operation method for manufacturing high-iron low-silicon slag through a copper oxygen enrichment double side blow smelting furnace. The method is characterized in that a 'Fubon furnace' is taken as main equipment, and the advantages of the fubon furnace of strong adaptation to raw materials, high reaction speed and simple operation are fully used. No fusing agent is added into the smelting raw materials, SiO2 and CaO contained in the copper concentrate are totally used for slag-making reaction, by virtue of strong agitation of primary air, the melt in the furnace is distributed uniformly, and good smelting effect is obtained, wherein the content of Fe in the obtained smelting slag is 40%-45%, and the content of SiO2 is 25%-27%.

Description

technical field [0001] The invention relates to a process method in the technical field of nonferrous metallurgy, in particular to an operation method for producing high-iron and low-silicon slag in a copper-oxygen-enriched double-side blowing smelting furnace. Background technique [0002] Copper oxygen-enriched side blowing smelting technology has a series of characteristics such as strong raw material adaptability, low smoke and dust rate, simple operation and low equipment investment, especially the oxygen-enriched double side blowing smelting process developed in recent years, which has developed rapidly in the domestic copper smelting field . The oxygen-enriched side-blown molten pool copper smelting furnace authorized by the State Intellectual Property Office on July 17, 2013 with the patent number ZL201220422805.1 was identified as "Fubang Furnace" by the China Nonferrous Metals Industry Association. This equipment belongs to the scope of side-blown furnaces . [0...

AI Technical Summary

Problems solved by technology

The problem of using the slagging operation method of the above-mentioned "Fubang Furnace" and other side-blowing furnaces is that the flux rate is high, and quartz sand and limestone flux are added, which increases the production cost; melting flux consumes the heat of reaction and increases fuel consumption.

In addition, the amount of slag is large, the waste slag contains 0.5% copper, the loss of copper is increased, and the comprehensive recovery rate of copper is low. In today's increasingly scarce copper resources, it has caused a huge waste of resources; the use of waste slag is limited and the added value is low.