Red mud solid waste comprehensive treatment reduction duplex furnace and process

A comprehensive treatment and red mud technology, applied in furnaces, rotary drum furnaces, furnace types, etc., can solve problems such as unstable product quality, increased treatment costs, and large energy consumption, and achieve reduced transshipment times, strong functionality, and energy saving The effect of running costs

Active Publication Date: 2019-12-24
刘森林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the development and utilization of red mud, researchers have carried out research on building materials, adsorption materials, filling materials, agricultural fertilizers, recycling of organic metals, etc., but most of them are in the theoretical research stage, so the overall comprehensive utilization rate is only about 15%.
[0003] Moreover, in the process of comprehensive treatment of red mud solid waste in the prior art, different equipment is often required, which requires transshipment, consumes a lot of energy, has low efficiency, unstable product quality, and increases treatment costs

Method used

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  • Red mud solid waste comprehensive treatment reduction duplex furnace and process
  • Red mud solid waste comprehensive treatment reduction duplex furnace and process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The process of red mud solid waste comprehensive treatment and reduction dual furnace, the processing flow of this product includes the following steps:

[0048] Step 1: To prepare the red mud composite material, first add lime powder and granules to the red mud raw material for stirring to dilute the water in the red mud material, and then mix the red mud raw material, limestone and reducing agent according to the ratio of 10:1: 0.5 for mixing and mixing. The model of the reducing agent is HSCY / 100. The mixed charge is transported to the pre-reduction rotary kiln by a belt conveyor, heated to about 1100°C in the rotary kiln, and the mixed charge is pre-reduced to obtain red mud. Composite raw materials;

[0049] Step 2: Dry the red mud composite material, take the red mud, discharge the red mud composite material from the hopper into the upper surface of the drying plate, and dry it at a temperature of 180°C for 10 minutes;

[0050] Step 3: calcining the red mud compo...

Embodiment 2

[0059] The process of red mud solid waste comprehensive treatment and reduction dual furnace, the processing flow of this product includes the following steps:

[0060] Step 1: To prepare the red mud composite material, first add lime powder and granules to the red mud raw material for stirring to dilute the water in the red mud material, and then mix the red mud raw material, limestone and reducing agent according to the ratio of 10:1: 0.5 for mixing and mixing. The model of the reducing agent is HSCY / 100. The mixed charge is transported to the pre-reduction rotary kiln by a belt conveyor, heated to about 1100°C in the rotary kiln, and the mixed charge is pre-reduced to obtain red mud. Composite raw materials;

[0061] Step 2: Dry the red mud composite material, discharge the red mud composite material from the hopper into the upper surface of the drying plate, and dry it at a temperature of 182°C for 12 minutes;

[0062] Step 3: calcining the red mud composite material at a...

Embodiment 3

[0071] The process of red mud solid waste comprehensive treatment and reduction dual furnace, the processing flow of this product includes the following steps:

[0072]Step 1: To prepare the red mud composite material, first add lime powder and granules to the red mud raw material for stirring to dilute the water in the red mud material, and then mix the red mud raw material, limestone and reducing agent according to the ratio of 10:1: 0.5 for mixing and mixing. The model of the reducing agent is HSCY / 100. The mixed charge is transported to the pre-reduction rotary kiln by a belt conveyor, heated to about 1100°C in the rotary kiln, and the mixed charge is pre-reduced to obtain red mud. Composite raw materials;

[0073] Step 2: Dry the red mud composite material, take the red mud, discharge the red mud composite material from the hopper into the upper surface of the drying plate, and dry it at a temperature of 187°C for 18 minutes;

[0074] Step 3: calcining the red mud compos...

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Abstract

The invention discloses a red mud solid waste comprehensive treatment reduction duplex furnace. The reduction duplex furnace comprises a rotary kiln and a melting furnace; and the rotary kiln and themelting furnace mutually communicate to form the reduction duplex furnace. The invention further discloses a process of the red mud solid waste comprehensive treatment reduction duplex furnace; and the process comprises the steps of: (1) preparation of red mud composite materials; (2) drying of the red mud composite materials; (3) calcining of the red mud composite materials; (4) crushing and mixing; (5) pellet pressing; (6) vacuum heat reduction; (7) smelting by the melting furnace; (8) preparation of raw materials; and (9) furnace slag treatment. The rotary kiln integrates drying, calcining,crushing, mixing and pellet pressing, improves the reliability of red mud comprehensive treatment, and reduces the transfer times and corresponding treatment cost; and a drying plate is reasonable instructural design and convenient for quick drying and leakage, and only needs drying by 10-20 minutes to greatly improve the drying efficiency.

Description

technical field [0001] The invention relates to the technical field of red mud solid waste comprehensive treatment and reduction double furnace, in particular to the red mud solid waste comprehensive treatment reduction double furnace and its technology. Background technique [0002] The current research on red mud focuses on dealkalization treatment and comprehensive utilization. For the development and utilization of red mud, researchers have carried out research on building materials, adsorption materials, filling materials, agricultural fertilizers, recycling of organic metals, etc., but most of them are in the theoretical research stage, so the overall comprehensive utilization rate is only about 15%. . [0003] Moreover, in the process of comprehensive treatment of red mud solid waste in the prior art, different equipment often needs to be used, which requires transshipment, consumes a lot of energy, has low efficiency, unstable product quality, and increases treatmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/24C21B3/06C21B13/08C21B13/14
CPCC21B3/06C21B13/08C21B13/14C22B1/2406Y02W30/50
Inventor 刘森林
Owner 刘森林
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