A kind of preparation method of bauxite for brown corundum smelting

Abstract

The invention provides a method for preparing bauxite for brown corundum smelting. The method comprises the following steps: raw material configuration, raw material grinding, slurry preparation, granulation, and roasting to obtain a finished product of raw material bauxite for brown corundum smelting. The present invention uses a large amount of bauxite powder ore, face ore, middle and low-grade ore, brown corundum smelting dedusting powder, and brown corundum tailings as its production raw materials to prepare bauxite for brown corundum smelting, which is not only cheap, but also utilizes clay to Bauxite powder ore, surface ore, medium and low-grade ore, brown corundum smelting dust removal powder, and brown corundum tailings micropowder are effectively bonded into uniform particles, which effectively prevents the segregation of the mixture during the roasting process, making the roasting , the fluctuation of raw material composition is small, so the prepared bauxite for brown corundum smelting has uniform composition and stable quality; and avoids waste of resources, greatly improves environmental protection benefits, and correspondingly reduces production costs of enterprises.

Description

technical field [0001] The invention relates to the technical field of brown corundum production, in particular to a method for preparing bauxite for brown corundum smelting. Background technique [0002] Bauxite is mainly used in the production of industrial alumina, and is also widely used in refractory materials, high alumina cement and abrasives. In recent years, with the rapid development of my country's economy, the demand for bauxite in the fields of aluminum industry, refractory material industry, high alumina cement, abrasives and grinding tools is increasing day by day, and the consumption of bauxite resources is increasing. , and these industries mostly use high-grade bauxite, resulting in a shortage of high-grade ore, while a large amount of powder ore, surface ore and low-grade ore are left idle. With the large-scale release of domestic alumina production capacity and the relative scarcity of bauxite resources in my country, as of 2008, my country's bauxite rese...

AI Technical Summary

Problems solved by technology

[0003] The lack of high-quality bauxite resources has had a great impact on the brown fused alumina industry that relies on bauxite resources for survival. The shortage of main production raw materials and rising prices, and the continuous decline in ore grades have led to the production cost of plundered corundum products. increase, various technical and economic indicators have deteriorated, and market competitiveness has declined, which seriously restricts the healthy and sustainable development of my country's brown fused alumina industry

[0004] During the smelting process of brown corundum, the dust collector will collect a large amount of dust removal powder, which mainly contains fine particles of brown corundum and dust in the air. The dust removal powder contains Al 2 o 3 The content is between 80-85%. In addition, the brown corundum tailing fine powder containing more impurities and having a fineness of 325 mesh will remain in the brown corundum granulation process. Before iron removal, the brown corundum tailing fine powder Al 2 o 3 The content is between 72-80%; the accumulation of these dust removal powders and fine powders will not only affect environmental protection, but also cause serious waste of resources, and correspondingly increase the production cost of enterprises