In the refining workshop, they are accompanied by 1200°C copper water all year round.
The copper content in slag is an important indicator of the recovery rate of scrap copper smelting. Without scientific guidance, it is very difficult to control the copper content in slag. In the face of changing and complex raw materials, the "one trick" operation mode can no longer meet production needs.
“How to overcome this technical problem?”

Although he knows that the weight is heavy and the difficulty is great, Guo Congfa, who refuses to admit defeat, is still determined to work hard to win the task of reducing the copper content in slag.
Starting from the characteristics of the raw materials entering the furnace, he fully learned from past results and experiences and lessons; he actively summarized and analyzed in detail the oxidation slagging data and copper-containing test results of slag produced over many years; he studied smelting literature and various technical materials in depth, and continued to explore. Improve in practice comparison...

Through on-site observation and analysis, the impurity elements contained in various raw materials are comprehensively considered, and the effects of combustibles, dust, garbage, etc. are eliminated; the impurity status of each raw material is obtained by comparing and summarizing the estimated grade of the raw material and historical data; Reasonably select the slag composition, determine the type of slag and the amount of flux added; pre-formulate the process operations of this furnace, control the number of oxidation and slag making, the method of slag removal in the furnace, the amount of remaining slag in the furnace, and the operation method of sulfur removal after slag removal. And control points, while strengthening the operation temperature control at each stage.

Hard work paid off, and he creatively proposed a series of advanced operating methods such as plowing smelting method, compound slagging agent method, shallow oxidation operation method, shallow reduction casting method, direct redox method, and redox disorder method. According to the characteristics of the smelting process of each furnace, the copper content in the slag has dropped from about 25% in the past to less than 16% now.

Dare to take on responsibilities and strive to be a pioneer in fulfilling the "responsibility and mission" of party members. Guo Congfa was named the "Outstanding Employee of Qingyuan Jiangxi Copper" in 2022 and the "Outstanding Employee of Jiangxi Copper South" in 2021-2022 for his outstanding performance.