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Method using high bauxite crushed aggregates to produce and prepare sintered alumina

A high-alumina bauxite and sintered corundum technology is applied in the field of producing sintered corundum by using high-alumina bauxite scraps to achieve low cost, controllability and improved resource utilization

Inactive Publication Date: 2016-05-25
TONGDA REFRACTORY TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for producing sintered corundum by using high-alumina bauxite scraps, which solves the problem of high-quality high-alumina bauxite scraps and powder reuse

Method used

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  • Method using high bauxite crushed aggregates to produce and prepare sintered alumina
  • Method using high bauxite crushed aggregates to produce and prepare sintered alumina
  • Method using high bauxite crushed aggregates to produce and prepare sintered alumina

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Experimental program
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Effect test

Embodiment 1

[0026] Two kinds of extra-grade refractory bauxite raw materials are used as raw materials, and they are sampled during crushing. The composition is shown in Table 1 below:

[0027] The production scale is 100t, and the production process is as follows:

[0028] The two kinds of raw materials are crushed into granules of ≤5mm, and then uniformly mixed in the three-dimensional homogenization equipment, and then put into two raw material bins respectively; using online continuous detection and automatic batching, the system sets Al 2 o 3 The mass percentage is 86%; the material prepared according to the automatic system is transported evenly into the ball milling equipment through the belt, the ball milling is 12 hours, the particle size is 200 mesh, and the passing rate is 91%; after the slurry is iron-removed; after being dried and granulated by spray drying equipment The moisture content of the product is 6.5%; it is automatically loaded into the car after being pressed by a...

Embodiment 2

[0033] Super-grade refractory bauxite raw material scraps supplemented with alumina powder are used as raw materials. The scraps are randomly inspected when they are crushed. The alumina powder is inspected at the factory. Its composition is shown in Table 2 below:

[0034] The production scale is 100 tons, and the production process is as follows:

[0035] Crumble the raw materials into granules ≤ 5mm, mix them evenly in the three-dimensional homogenizer, and then transport them to the raw material bin, and transport the alumina powder to another raw material bin; use continuous online detection and automatic batching, and the system sets Al 2 o 3 The mass percentage is 89%; the material prepared according to the automatic system is transported evenly into the ball mill through the belt, the ball mill is 14 hours, the particle size is 200 mesh, and the pass rate is 93%. The moisture content of the product is 5.8%; it is automatically loaded into the car after being pressed b...

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Abstract

A method using high bauxite crushed aggregates to produce and prepare sintered alumina belongs to the technical field of a refractory raw material production technology and a bauxite ore using technology. High bauxite crushed aggregates are used as a main raw material, and industrial aluminum oxide powder is used as an auxiliary material; and the sintered alumina is prepared by adopting a continuous production process of raw material grading, homogenizing, continuous burdening, wet ball grinding, slurry deironing, spraying drying, mechanical pressing, drying, high temperature sintering, and crushing grading through controlling process parameters. The method has the advantages of efficient use of the refractory high bauxite crushed aggregates, low cost of production raw materials, environment friendly process and controlled product quality.

Description

technical field [0001] The invention belongs to the technical fields of refractory raw material production technology and bauxite utilization technology, and in particular relates to a method for producing sintered corundum by using high-alumina bauxite scraps. Background technique [0002] my country's refractory high-alumina bauxite resources have large reserves and wide distribution. It has been used as an important raw material for the refractory industry for a long time and has provided support for it, providing a reliable guarantee for my country's refractory materials to occupy the international market. However, the traditional high-alumina bauxite mining and simple processing mode can only use large pieces of natural bauxite, and a large proportion of the broken materials are discarded in vain, which not only wastes resources, but also destroys the ecological environment. Especially for super-grade refractory high-alumina bauxite, which is a scarce resource, it is a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/622C04B35/626
CPCC04B35/10C04B35/622C04B35/626C04B35/6261C04B35/62695C04B2235/606C04B2235/77
Inventor 安建成王亚利陈超群王林俊高长贺朱明明李平冯运生
Owner TONGDA REFRACTORY TECH CO LTD
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