Method for preparing abrasive-grade bauxite clinker from bauxite raw fine ore

A technology of bauxite clinker and slag powder, which is applied in the field of bauxite clinker production, can solve the problems of poor comprehensive utilization of bauxite resources, high production costs, and low resource utilization. Achieve the effect of avoiding secondary dust pollution, good product particle size and low raw material price

Inactive Publication Date: 2018-08-07
贵州鑫益能陶粒支撑剂有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The price of lump ore is high. Although the price of soft ore or powder ore or mixed ore is low and the supply is wide, customers do not need products with more than 1% powder. In addition, there are too many fine materials (powder), and the production dust is large and calcined. Poor air permeability, etc. The traditional production method can only rush to buy lu

Method used

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  • Method for preparing abrasive-grade bauxite clinker from bauxite raw fine ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1. A kind of method utilizing bauxite raw ore powder to prepare abrasive grade bauxite clinker, comprises the following steps:

[0028] a. Coarsely crushing the bauxite raw meal to a coarse material with a particle size of less than 60 mm to obtain product A;

[0029] b. Sieve product A through a 10mm sieve to obtain product B under the sieve;

[0030] C, spray the binding agent into the product B, and mix well to get the product C; the addition of the binding agent is 6% of the weight of the product B; the binding agent is a mixture of water glass and water, wherein The content of water glass is 40%;

[0031] d, making product C into a spherical shape with a particle diameter of 30mm, i.e. product D;

[0032] e. Dry product D to obtain product E;

[0033] f. Calcining product E at 1200° for 2 hours, then cooling.

[0034] In the aforementioned step c, the modulus of the water glass is greater than 2.8, and the specific gravity is greater than or equal to 1...

Embodiment 2

[0037] Example 2. A kind of method utilizing bauxite raw ore powder to prepare abrasive grade bauxite clinker, comprises the following steps:

[0038] a. Coarsely crushing the bauxite raw meal to a coarse material with a particle size of less than 60 mm to obtain product A;

[0039] b. Sieve product A through an 8mm sieve to obtain product B under the sieve;

[0040] C, spray the binding agent into the product B, and mix well to get the product C; the addition of the binding agent is 4% of the weight of the product B; the binding agent is a mixture of water glass and water, wherein The content of water glass is 20%;

[0041] d, the product C is made into a spherical shape with a particle diameter of 8mm, i.e. the product D;

[0042] e. Dry product D to obtain product E;

[0043] f. Calcining product E at 1150° for 1.5h, then cooling to obtain it.

[0044] In the aforementioned step c, the modulus of the water glass is greater than 2.8, and the specific gravity is greater ...

Embodiment 3

[0046] Example 3. A kind of method utilizing bauxite raw ore powder to prepare abrasive grade bauxite clinker, comprises the following steps:

[0047] a. Coarsely crushing the bauxite raw meal to a coarse material with a particle size of less than 60 mm to obtain product A;

[0048] b. Sieve product A through a 10mm sieve to obtain product B under the sieve;

[0049] C, spray the binding agent into the product B, and mix well to get the product C; the addition of the binding agent is 8% of the weight of the product B; the binding agent is a mixture of water glass and water, wherein The content of water glass is 45%;

[0050] d, making product C into a spherical shape with a particle diameter of 40mm, i.e. product D;

[0051] e. Dry product D to obtain product E;

[0052] f. Calcining product E at 1250° for 3.5 hours, then cooling to obtain it.

[0053] In the aforementioned step c, the modulus of the water glass is greater than 2.8, and the specific gravity is greater tha...

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PUM

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Abstract

The invention discloses a method for preparing abrasive-grade bauxite clinker from bauxite raw fine ore. The method includes steps of a, smashing bauxite raw powder until the size of the bauxite raw powder reaches 1-60mm to obtain a product A; b, sieving the product A by 10mm sieve meshes to obtain a product B which is undersize powder; c, spraying a bonding agent into the product B, and evenly mixing to obtain a product C, wherein the binding agent is the mixture of sodium silicate and water, and the content of the sodium silicate is 20-45%; d, preparing spheres from the product C to obtain aproduct D; e, drying the product D to obtain a product E; f, calcining the product E at the temperatures of 1150-1250 DEG C for 1.5-2.5 hours, and then cooling to obtain the abrasive-grade bauxite clinker. The method has the advantages of low production cost and high resource utilization rate.

Description

technical field [0001] The invention relates to a production method of bauxite clinker, in particular to a method for preparing abrasive grade bauxite clinker by using bauxite raw ore powder. Background technique [0002] Abrasive-grade bauxite clinker is the main raw material for the production of brown corundum in the abrasive industry. The abrasive-grade bauxite clinker calcined in traditional vertical kilns or rotary kilns is produced using raw bauxite lumps with a particle size of 30 mm or more. However, due to the limited amount of lump ore larger than 30mm in the mining process of bauxite, the quantity of ore smaller than 30mm is huge, especially the soft ore is basically fine particles or powder in the process of mining, loading and unloading, and the quantity is huge and relatively cheap The bauxite raw ore less than 30mm cannot be used to produce abrasive grade bauxite clinker, resulting in the rush to buy lump ore, and the price of raw materials remains high. [...

Claims

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Application Information

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IPC IPC(8): C04B35/10C04B35/626C04B35/622C04B35/63
CPCC04B35/10C04B35/622C04B35/62605C04B35/62695C04B35/6316C04B2235/3427C04B2235/5427
Inventor 宫营方宋晓波唐志国熊国武向万华黄勇宋翔夏光发刘斌张红民唐志荣
Owner 贵州鑫益能陶粒支撑剂有限公司
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