CN101885616A

CN101885616A - Method for preparing bauxite secondary homogenizing material

Info

Publication number: CN101885616A
Application number: CN2010102102336A
Authority: CN
Inventors: 张军
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-06-28
Filing date: 2010-06-28
Publication date: 2010-11-17

Abstract

The invention discloses a method for preparing a bauxite secondary homogenizing material. The method is characterized by comprising the steps of deironing, aluminum increasing, crushing, milling, forming, firing, discharging from kiln and the like after roasting low-grade bauxite and bauxite waste serving as main materials at a high temperature, wherein the alumina content after the roasting is stabilized at 75 to 77 percent, the iron content is 0.5 to 1.56 percent and the volume density is 3.00. Compared with the prior art, the method has the advantages of saving energy and reducing emission, reducing production energy consumption, improving the product quality, and reducing the wasting of the mine resources, along with stable product performance and manufacturer utilization ratio of 100 percent and is particularly suitable for preparing the bauxite secondary homogenizing material.

Description

A kind of making method of bauxite secondary homogenizing material

Technical field:

The invention belongs to the technical field of chemical industry waste utilization, be specifically related to a kind of making method of bauxite secondary homogenizing material, be adapted to fire-resistant smelting especially and use.

Background technology: just known to the contriver, at present in electric power, petrochemical complex, fire-resistant smelting, the bauxite secondary homogenizing material that aspects such as life are used be mostly because of its aluminium content lower, (about 70%), and iron-holder is higher, (about 2.6%), and it is inhomogeneous that its product of volume density less (being 2.6) mainly all exists particle, shape is bad, mobile poor, insufficient strength, adsorptive power is not strong, can not satisfy the problem of producing needs.

Technology contents:

Purpose of the present invention is exactly for remedying above deficiency, a kind of aluminium content that provides is higher and stable, and iron-holder is lower, the volume density height, can make shape of product good, the making method that product performance are stable, every physical and chemical index is higher than a kind of bauxite secondary homogenizing material of national standard.

The present invention realizes like this, the making method of described a kind of bauxite secondary homogenizing material, it is characterized in that major ingredient low-grade bauxite and bauxitic clay waste material, by deironing, increase aluminium, fragmentation, abrasive dust, moulding, burn till, operation such as kiln discharge forms, roasting rear oxidation aluminium stable content is at 75-77%, and iron-holder is 0.5-1.56%, and volume density is 3.00.It is exactly with major ingredient bauxitic clay and the coarse crushing of bauxitic clay waste material that so-called deironing increases aluminium, wash mud then and remove silt, adopt artificial selection removal of impurities, with the bauxitic clay wet grinding in the ball mill again of going behind the silt, classification then, that tells roughly returns the circulation of Raymond mill and regrinds, fine granules then by first step high-gradient intensity magnetic separator, is selected the ferruginous mine tailing of titaniferous, removes the one-level of the ferruginous ore pulp of titaniferous through being provided with continuously, the sorting of secondary fine ga(u)ge screen, the fines of choosing, the coarse fodder that tails over enter to regrind and enter three grades and the sorting of level Four fine ga(u)ge screen then, obtain fine granules, remove the siliceous mine tailing of compass screen surface, merge the fine granules that sift out at different levels, the second stage high-gradient intensity magnetic separator of making a gift to someone is further removed the ferruginous mineral substance of titaniferous, by flotation, resulting wet fine fodder obtains the wet fine fodder of highly purified bauxite ore through dewatering and filtering again.The wet fine fodder of bauxite ore made ball or be pressed into piece in calcining kiln, carry out incinerating, obtain ripe fine fodder.Ripe fine fodder cooled off form, detect through national refractory quality supervision inspection center, alumina content reaches 81.26%, and iron-holder is 1.56%, and volume density is 3.00.

The making method of a kind of bauxite secondary homogenizing material of the present invention has energy-saving and emission-reduction, reduces production energy consumption, improves the quality of products, and product performance are stable, and producer's rate of utilization reaches 100% and reduces the advantage that mine resources is wasted.

Embodiment:

The present invention is described in further detail below in conjunction with embodiment, described bauxite secondary homogenizing material is to utilize low-grade bauxite and bauxitic clay waste material, by with major ingredient bauxitic clay and the coarse crushing of bauxitic clay waste material, wash mud then and remove silt, adopt artificial selection removal of impurities, with the bauxitic clay Raymond mill wet grinding again of going behind the silt, classification then, that tells roughly returns the circulation of Raymond mill and regrinds, fine granules then by first step high-gradient intensity magnetic separator, is selected the ferruginous mine tailing of titaniferous, removes the one-level of the ferruginous ore pulp of titaniferous through being provided with continuously, the sorting of secondary fine ga(u)ge screen, the fines of choosing, the coarse fodder that tails over enter to regrind and enter three grades and the sorting of level Four fine ga(u)ge screen then, obtain fine granules, remove the siliceous mine tailing of compass screen surface, merge the fine granules that sift out at different levels, the second stage high-gradient intensity magnetic separator of making a gift to someone is further removed the ferruginous mineral substance of titaniferous, by flotation, resulting wet fine fodder obtains the wet fine fodder of highly purified bauxite ore through dewatering and filtering again.The wet fine fodder of bauxite ore made ball or be pressed into piece in calcining kiln, carry out incinerating, obtain ripe fine fodder.With raw material, ripe fine fodder carry out the refrigerative deironing, increase aluminium, fragmentation, abrasive dust, moulding, burn till, operation such as kiln discharge forms.This product is supervised inspection center through national refractory quality and is detected, and alumina content reaches 81.26%, and iron-holder is 1.56%, and volume density is 3.00.

Claims

1. the making method of a bauxite secondary homogenizing material, it is characterized in that major ingredient low-grade bauxite and bauxitic clay waste material after high-temperature roasting, by deironing, increase aluminium, fragmentation, abrasive dust, moulding, burn till, operation such as kiln discharge forms, roasting rear oxidation aluminium stable content is at 75-77%, iron-holder is 0.5-1.56%, and volume density is 3.00.

2. the making method of a kind of bauxite secondary homogenizing material as claimed in claim 1, it is characterized in that major ingredient bauxitic clay and the coarse crushing of bauxitic clay waste material, wash mud then and remove silt, adopt artificial selection removal of impurities, with the bauxitic clay wet grinding in the ball mill again of going behind the silt, classification then, that tells roughly returns the circulation of Raymond mill and regrinds, fine granules is then by first step high-gradient intensity magnetic separator, select the ferruginous mine tailing of titaniferous, remove the one-level of the ferruginous ore pulp of titaniferous, the sorting of secondary fine ga(u)ge screen, the fines of choosing through being provided with continuously, the coarse fodder that tails over enters to regrind and enters three grades and the sorting of level Four fine ga(u)ge screen then, obtain fine granules, remove the siliceous mine tailing of compass screen surface, merge the fine granules that sift out at different levels, the second stage high-gradient intensity magnetic separator of making a gift to someone, further remove the ferruginous mineral substance of titaniferous, again by flotation, resulting wet fine fodder obtains the wet fine fodder of highly purified bauxite ore through dewatering and filtering.

3. the making method of a kind of bauxite secondary homogenizing material as claimed in claim 1 is characterized in that the wet fine fodder of bauxite ore made ball or be pressed into piece carrying out incinerating in calcining kiln, obtains ripe fine fodder, ripe fine fodder is cooled off form.