Flash smelting method and system for copper

Abstract

The invention discloses a flash smelting method and system for copper and relates to a copper matter production technology. The flash smelting method and system are used for realizing higher control accuracy in comparison with the prior art, effectively improving the operation rate of a flash furnace and the production stability, stabilizing the grade of copper matte and leading the standard derivation of the copper matte to be reduced as well as increasing the comprehensive recovery rate of smelting. According to the technical scheme of the invention, the flash smelting method comprises a feed-forward data processing step, a feedback data processing step and a technology parameter adjustment step, wherein in the feed-forward data processing step, an initial value of the technology parameter needed for charging amount is worked out according to a planned value of a target parameter; in the feedback data processing step, a measured value of the target parameter of the flash furnace is collector, the measured value and the planned value are calculated and processed, and the compensation dosage of the technology parameter is worked out; in the technology parameter adjustment step, the initial value and the compensation dosage are combined, correction computation is carried out on the technology parameter to obtain a corrected value of the technology parameter; and a control system of the flash furnace implements a charging technology parameter according to the corrected value. The flash smelting method is mainly used for producing and purifying the copper matte, i.e. an intermediate product in copper refining.

Description

[0001] technical field [0002] The invention relates to a matte production technology. Background technique [0003] The flash furnace smelting process is to spray the dried charge into the reaction tower of the flash furnace through the concentrate nozzle and oxygen-enriched air, and use the heat of oxidation reaction of iron and sulfur in the concentrate and the combustion of heavy oil to form a high temperature to complete the sulfur production process. The matte and slag are separated in the sedimentation tank. The reaction tower of the flash furnace is the place where flash smelting performs high-temperature physical and chemical reactions and basically completes the sulfur production process. The temperature distribution of the inner wall surface and the gas in the tower directly reflect the internal physical and chemical reactions and the change trend of the slag hanging on the tower wall. It is the main parameter to judge the production status of the flash furnace....

AI Technical Summary

Problems solved by technology

For the flash smelting process, it is difficult and often unrealistic to obtain widely varying sample data from actual production, resulting in limited application

The control accuracy of the three main target parameters (matte grade, iron-silicon ratio Fe/SiO2 in slag, matte temperature) that lead to flash furnace production requirements cannot meet the requirements of production control

[0007] In the existing patent technology, for example, the patent application number is 200810031808.0, the name is "an intelligent integrated modeli

Images