Process for processing industrial waste residue of ferroalloy industry

Abstract

The invention relates to a process for processing an industrial waste residue of the ferroalloy industry. The process comprises the following steps: a) adding the waste residue at the molten state into a tempering electric furnace, detecting the contents of various oxides in the waste residue, adding a silicon powder when the coefficient of acidity is less than 1.6, then temporarily raising the temperature to 1500 DEG C, wherein the coefficient of acidity is the contents of acidic oxides / basic oxides, mainly referring to the contents of silicon dioxide and aluminum oxide / and the contents of calcium oxide and magnesium oxide; b) adding into a thermal electric furnace; c) flowing out from the thermal electric furnace to a centrifugal machine, producing an inorganic fiber; d) entering a plate (strip) production line, sequentially forming a vertical fiber through a pendulum bob, crimping, pressing, and solidifying to prepare a rock wool plate product. The waste reside does not need to stand and cool to waste the energy, the original heat of the waste residue is fully utilized, the use of the energy is reduced, the waste residue at the molten state is fully utilized and processed into a mineral wool product, the land is not occupied, and the economic benefit is good.

Description

technical field [0001] The invention relates to a process for treating industrial waste slag in the ferroalloy industry. Background technique [0002] During the production of ferroalloys (ferromanganese, ferronickel, chromium, ferrosilicon and pig iron, etc.), a large amount of waste slag (1:1 to 1:2) will be produced. The main components of the waste slag are calcium oxide, magnesium oxide, di Silicon oxide, aluminum oxide, iron oxide and other trace metal elements. When coming out of the furnace, the waste slag is in a molten state with a temperature of 1200-1500°C. The traditional treatment method is to bury or make cement additives (auxiliary materials) after standing for cooling, which occupies land and has no economic benefits. Contents of the invention [0003] The present invention aims to solve the above problems, and provides a process for treating industrial waste slag in the ferroalloy industry. It does not need to waste heat by cooling the waste slag, fully...

AI Technical Summary

Problems solved by technology

The traditional treatment method is to bury or make cement additives (auxiliary materials) after standing and cooling, which occupies land and has no economic benefits