Production method for smelting manganese-series iron alloys by utilizing crystalline silicon cutting waste powder as reducing agent

Abstract

The invention discloses a production method for smelting manganese-series iron alloys by utilizing crystalline silicon cutting waste powder as a reducing agent. The production method is characterized in that all or part of cutting mortar waste powder in the solar photovoltaic crystalline silicon slicing industry replaces coke as a reducing agent, and the reducing agent is directly added into manganese ore raw materials; current equipment is adopted to carry out smelting operation, so that reduction reaction is carried out on manganese oxide, iron oxide or silicon dioxide in silica ingredients under a high-temperature melting state by utilizing high energy consuming characteristic and strong reduction characteristic of high-purity simple substance silicon and silicon carbide in the cutting mortar waste powder so as to obtain manganese-series iron alloy products. According to the trial, the production method truly has the outstanding advantages that the process technology is simple and is easy to grasp, silicon resources are efficiently recycled and utilized, the production cost of the manganese-series iron alloys is reduced, the energy-saving and consumption-reducing effect is good and the economic benefits are remarkable, can completely solve the pollution problem generated by accumulated waste powder in the crystalline silicon slicing industry, and has a very good popularization and application prospect in the metallurgical industry and the solar new energy resource industry.

Description

technical field [0001] The present invention relates to a technology for efficient recycling of crystalline silicon cutting waste powder for harmless and comprehensive utilization of resources, which belongs to the technical field of environmental protection management in the solar photovoltaic industry and comprehensive utilization of energy-saving and emission-reducing resources in the metallurgical industry. The invention discloses a production method for smelting manganese-based ferroalloys by using crystalline silicon cutting waste powder as a reducing agent. Background technique [0002] We know that the limited reserves of fossil energy on the earth have been over-exploited and gradually exhausted. In order to protect the ecological environment, the Chinese government is actively carrying out energy-saving and emission-reduction work. Restricted exploitation of fossil energy in energy policy has become an important issue. consensus. The development and utilization of...

AI Technical Summary

Problems solved by technology

The current solution is to use a part of crystalline silicon cutting silicon-containing mortar waste in ordinary refractory bricks and construction mortar. Due to the extremely limited amount used, it has little effect on digesting and solving the problem of tailing powder stacking pollution, and Elemental crystalline silicon and silicon carbide with high energy loading and strong reducing characteristics, which are the most economically valuable in tailings, have not been effectively recycled.