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Aluminum oxide dissolving device capable of realizing both high-temperature and low-temperature dissolving ways and method thereof

A kind of alumina, high and low temperature technology, applied in the direction of alumina/hydroxide, etc., to achieve the effect of avoiding restrictions, enhancing strength, and realizing resource complementarity

Active Publication Date: 2012-07-04
NORTHEASTERN UNIV ENG & RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the existing set of dissolution equipment can only perform one dissolution process, the present invention provides an alumina dissolution equipment and method capable of realizing two dissolution modes of high and low temperature

Method used

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  • Aluminum oxide dissolving device capable of realizing both high-temperature and low-temperature dissolving ways and method thereof
  • Aluminum oxide dissolving device capable of realizing both high-temperature and low-temperature dissolving ways and method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] The structure of the alumina dissolution device that can realize high and low temperature dissolution methods is as follows:figure 1 As shown, it includes 1~10 grade casing preheaters, insulation tank group and 1~10 grade flash evaporator, 1~10 grade casing preheaters are connected in series in sequence, and the material outlet of 10 grade casing preheater 4 is connected with The insulation tank group is connected, the insulation tank group is connected with the first-stage flash evaporator 9, the first to tenth-stage flash evaporators are sequentially connected in series, and the material inlet of the fifth-stage casing preheater 2 is connected with the material input pipeline;

[0024] The insulation tank group is composed of 10 insulation tanks in series, the first 5 insulation tanks are used as the first half group of insulation tanks, and the last 5 insulation tanks are used as the second half group of insulation tanks;

[0025] The discharge port of the 10-level ca...

Embodiment 2

[0035] The structure of the alumina dissolution device that can implement two dissolution methods is the same as that in Example 1; the difference is that the insulation tank group is composed of 8 insulation tanks connected in series, the first 4 insulation tanks are used as the first half group of insulation tanks, and the last 4 insulation tanks are used as the rear insulation tanks. Half set of insulation tanks;

[0036] The above-mentioned device is used for low-temperature dissolution, and the high-pressure steam pipeline is connected with the steam inlet of the 5-stage casing preheater, the 5-stage casing preheater is separated from the 6-stage casing preheater, and the 5-stage casing preheater The material outlet is connected to the second half group of insulation tanks, the first half group of insulation tanks is separated from the second half group of insulation tanks, the first half group of insulation tanks is connected to the 6-stage flash evaporator, the 5-stage f...

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Abstract

The invention relates to an aluminum oxide dissolving device capable of realizing two high-temperature and low-temperature dissolving ways and a method thereof, which belong to the field of aluminum oxide production technology. A multistage sleeve pipe preheater, an insulation can group and multistage flash evaporators are divided into a first half group and a second half group; the material outlet of the first half group of the sleeve pipe preheater is communicated with the second half group of the insulation can; and the first half group of the insulation can is communicated with the first flash evaporator of the second half group of the flash evaporator. The method comprises the following steps: when dissolving under high temperature, a complete set of device is adopted for high-temperature dissolving; in case of dissolving at low temperature, the first half group of the sleeve pipe preheater, the second half group of the insulation can and the first half group of the flash evaporator are used as the first set of dissolving device, and the second half group of the sleeve pipe preheater, the first half group of the insulation can and the second half group of the flash evaporator are used as the second set of dissolving device; and the two sets of devices are both used for low-temperature dissolving. With the device and the method disclosed by the invention, the conversion from the high-temperature dissolving process to the low-temperature dissolving process can be realized through changing the dissolving process according to the change of ores.

Description

technical field [0001] The invention belongs to the technical field of alumina production, and in particular relates to an alumina dissolution device and method capable of realizing two dissolution modes of high and low temperature. Background technique [0002] Bauxite refers to the collective name of ores that can be used in industry, with gibbsite, boehmite or diaspore as the main minerals; bauxite is the best raw material for the production of metal aluminum. More than 90% of the world's aluminum production is produced from bauxite. [0003] The world's bauxite reserves are 23 billion tons, and the reserve base is 28 billion tons. Among them, the countries with rich bauxite resources are: Australia, Guinea, Brazil, Jamaica, India, Hungary, Indonesia; and the global bauxite reserves are huge In contrast, my country's bauxite resources are relatively poor; relevant experts pointed out that according to the estimation of the remaining proven reserves, my country's bauxite r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/02
Inventor 赵成明罗亚林李宝林
Owner NORTHEASTERN UNIV ENG & RES INST CO LTD