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System and method for producing aluminum oxide with desiliconized fly ash sintering method

A technology of fly ash and alumina, applied in chemical instruments and methods, preparation of alkali metal aluminate/alumina/aluminum hydroxide, inorganic chemistry, etc. Different, limit alumina and other issues, to achieve the effect of low investment and construction cost, avoid over-burning and burning, and easy maintenance

Pending Publication Date: 2018-04-06
SHENWU TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The soda lime sintering method usually adopts the traditional rotary kiln. The powdered fly ash becomes block after sintering in the rotary kiln, and the subsequent crushing consumes a lot of energy. Moreover, the clinker in the rotary kiln is in the form of a block rolling and sintering, which is easy to cause the inside and outside of the clinker block. Defects such as different degrees of sintering
Due to the above characteristics of the traditional rotary kiln, the existing sintering process has high energy consumption and low output, which limits the development of alumina production by sintering to a certain extent.

Method used

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  • System and method for producing aluminum oxide with desiliconized fly ash sintering method
  • System and method for producing aluminum oxide with desiliconized fly ash sintering method
  • System and method for producing aluminum oxide with desiliconized fly ash sintering method

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Embodiment Construction

[0041] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0042] Such as figure 1 As shown, the exemplary system for producing alumina by desiliconization fly ash sintering method according to the present invention generally includes a desilication fly ash sintering mechanism, an aluminum hydroxide extraction device and a roasting device connected in sequence.

[0043] Specifically, the derailed fly ash sintering mechanism includes a first ball mill, a conveyor belt, a silo, a screw conveyor, a semi-suspension furnace, a cooler, a trough conveyor, a screening machine, a roller crushe...

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Abstract

The invention discloses a system for producing alumina by desiliconization fly ash sintering method, which comprises a desiliconization fly ash sintering mechanism, an aluminum hydroxide extraction device and a roasting device. The desilication fly ash sintering mechanism includes a first ball mill, The silo, semi-suspension furnace, cooling machine, second ball mill, and conveying mechanism, the system for producing alumina by desiliconization fly ash sintering method not only achieves low energy consumption, but also further improves productivity. The invention also discloses a method for producing alumina by sintering the desiliconized fly ash.

Description

technical field [0001] The invention relates to the technical field of pyrometallurgical equipment, in particular to a system and method for producing alumina by sintering desiliconized fly ash. Background technique [0002] At present, the methods for extracting alumina from ore mainly include: soda lime sintering method, Bayer-sintering combined method, etc. The soda lime sintering method usually adopts the traditional rotary kiln. The powdered fly ash becomes block after sintering in the rotary kiln, and the subsequent crushing consumes a lot of energy. Moreover, the clinker in the rotary kiln is in the form of a block rolling and sintering, which is easy to cause the inside and outside of the clinker block. Defects such as different degrees of sintering. Due to the above-mentioned characteristics of the traditional rotary kiln, the existing sintering process has high energy consumption and low output, which limits the development of alumina production by sintering to a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/08C01F7/14C01F7/44
CPCC01F7/08C01F7/142C01F7/444
Inventor 温雨鑫张曦东喻善均王晓远赵凯孙芳芳王雪彩吴道洪
Owner SHENWU TECH GRP CO LTD
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