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Process for resourceful treatment of red mud by rotary kiln method and rotary kiln

A rotary kiln and recycling technology, applied in waste heat treatment, chemical industry, improvement of process efficiency, etc., can solve the problems of high cost, pollution hazards, and high energy consumption of treatment methods, so as to reduce treatment costs and avoid explosions. Risks, the effect of reducing energy consumption

Active Publication Date: 2021-08-13
李朝侠 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0020] For this reason, the present invention provides a process and a rotary kiln for recycling red mud with a rotary kiln method, which solves the lack of effective recycling of red mud in the prior art, and the existing processing method has high energy consumption, high cost, and pollution. and hazardous technical issues

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  • Process for resourceful treatment of red mud by rotary kiln method and rotary kiln
  • Process for resourceful treatment of red mud by rotary kiln method and rotary kiln
  • Process for resourceful treatment of red mud by rotary kiln method and rotary kiln

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Embodiment Construction

[0038] In order to describe the technical content, achieved objectives and effects of the present invention in detail, the following descriptions will be made in conjunction with the embodiments.

[0039] This embodiment provides a process for recycling red mud by the rotary kiln method. The red mud containing sodium ferrite water glass alkali solution is mixed with carbon-containing materials and mixed with each other. For example, 100 tons of red mud mixed materials are put in at a time. Among them, the carbon-containing material accounts for 50-55% by weight, and the red mud accounts for 45% by weight. A rotary kiln is used as the main equipment for process treatment, and the mixed material is added to the rotary kiln. Through the smelting reaction in the rotary kiln, Different from the conventional smelting process, the red mud is separated and decomposed, and iron, ferrosilicon, high-temperature silica clinker, industrial glass, and sodium salt ultrafine powder and vapor-d...

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Abstract

The invention provides a process for resourceful treatment of red mud by a rotary kiln method, which comprises the following steps: adding a red mud mixed material doped with a carbon-containing material into a rotary kiln, separating and decomposing the red mud through a smelting reaction in the rotary kiln, and extracting metal and silicide. According to the process for resourceful treatment of the red mud through the rotary kiln method and the rotary kiln, harmful red mud solid waste is effectively converted into industrial and living resourceful substances, the treatment process is safe, energy-saving and reliable, and industrial mass production can be carried out to make up for increasingly scarce resources.

Description

technical field [0001] The invention belongs to the field of metallurgical solid waste and its reuse, and in particular relates to a process for recycling red mud by a rotary kiln method and the rotary kiln. Background technique [0002] my country is the world's largest producer and consumer of aluminum. The raw material of aluminum is bauxite. First grind the bauxite raw material to about 300 meshes, then put the bauxite fine powder into the sodium-alkali solution to soak and decompose, extract the aluminum hypochlorite to produce aluminum, and the rest is high-saturation dense-phase sodium ferrite water The mixed solution of glass and residual sodium aluminate solution soaks the deposited iron oxide, titanium oxide and calcium silicate in it to become red mud. For every ton of aluminum hydroxide produced, approximately 1.4-1.6 tons of red mud are produced at the same time. The red mud is all composed of 0-10μm fine powder, soaked in active sodium ferrite water glass sa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/12C03C1/00C21B13/08B09B3/00F27B7/00F27B7/20F27B7/33F27B7/38F27B7/40F27D17/00
CPCC01B33/12C03C1/002C21B13/08F27B7/00F27B7/20F27B7/33F27B7/38F27B7/40F27D17/001B09B3/40Y02P10/20Y02P20/10Y02P10/25Y02P20/129
Inventor 李朝侠黄河
Owner 李朝侠
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