Device and process for producing manganese monoxide through reduction of low-grade manganese oxide ore by using biomass

Abstract

The invention discloses a device and a process for producing manganese monoxide through the reduction of low-grade manganese oxide ore by using biomass. The invention belongs to the technical field of ferrous metallurgy. According to the device, a biomass gas combustor is arranged on the rear of a rotary kiln. The rotary kiln is connected to a reaction furnace through a reaction furnace thruster. The reaction furnace is connected with a stewing tank. The stewing tank is connected with a spiral cooler. The process comprises the steps that: the mineral, a reduction catalyst, and biomass are respectively crushed and are mixed; the mineral, the reduction catalyst, and the biomass are dried in the rotary kiln; through biomass gas combustion, the reduction reaction between the biomass and the mineral is ignited; the raw material is delivered into the reaction furnace; a self-heating reduction reaction is carried out, wherein the reduction upon the mineral is further accelerated with the reaction heat in the reaction furnace; The material is delivered into the stewing tank, such that the reaction can be carried out more sufficiently; the material is cooled to normal temperature, such that mineral-powder-grade manganese monoxide is obtained. Traditionally, coal is adopted as a reducing agent in manganese oxide reduction, the reduction temperature is high, energy consumption is high, and production cost is high. With the device and the process provided by the invention, the defects are overcome.

Description

technical field [0001] The invention belongs to the technical field of black metallurgy, and in particular relates to equipment and a process for producing manganese monoxide by reducing low-grade manganese oxide ore with biomass. It specifically relates to a process and equipment for reducing powdery manganese dioxide ore to manganese monoxide with biomass. Background technique [0002] my country is a big country of manganese production, and at the same time, it is a country that lacks manganese ore resources. It needs to import a large amount of manganese ore from abroad. In 2010, the import of manganese ore exceeded 10 million tons. At present, most domestic electrolytic manganese enterprises use manganese carbonate as raw material for production. The manganese ore in manganese carbonate ore has low manganese content and high calcium and magnesium content, resulting in excessive acid consumption and large tailings in the electrolysis process. The environment creates eno...

AI Technical Summary

Problems solved by technology

[0003] Traditional manganese oxide reduction mainly uses coal as a reducing agent, which has high reduction temperature, high energy consumption, high production cost, and no mature process equipment, which limits the development of manganese dioxide to manganese monoxide technology.

Images