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Method for preparing composite porcelain imitation wood prepared by bauxite tailings

A bauxite and tailings technology, applied in clay preparation devices, chemical instruments and methods, manufacturing tools, etc., can solve the problems of ineffective research on bauxite tailings, environmental impact, land occupation, etc., and achieve performance Excellent, harm reduction, simple production process effect

Active Publication Date: 2010-04-28
中铝中州铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the Bayer alumina production process of mineral processing, it is necessary to produce tailings accounting for about 20% of the weight of the raw ore during the mineral processing process. A processing plant with an annual processing capacity of 1.8 million tons of raw ore should produce nearly 400,000 tons of tailings on a dry basis. , These tailings stockpiles bring a series of problems such as environmental impact and land occupation
[0003] Bauxite beneficiation tailings are solid wastes produced during the alumina production process of the Bayer process. In recent years, the national engineering research on the recycling of solid wastes has carried out research on the manufacture of low-temperature ceramic materials from industrial waste residues, and has successfully Developed technologies for preparing low-temperature ceramic composite materials with fly ash, foundry waste sand, phosphorus slag, steel slag, slag, and iron tailings as main raw materials. In these studies, the activation mechanism, composite mechanism, and preparation process, but there is no effective research on bauxite tailings

Method used

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  • Method for preparing composite porcelain imitation wood prepared by bauxite tailings
  • Method for preparing composite porcelain imitation wood prepared by bauxite tailings
  • Method for preparing composite porcelain imitation wood prepared by bauxite tailings

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Calcinate the bauxite dressing tailings at 800°C for 30 minutes; grind the fineness of the powder to a 180# sieve residue of less than 3%, and activate the tailings by weight: blast furnace slag: fly ash: Cement=55:20:20:5 is mixed with blast furnace slag, fly ash, and cement to prepare a low-temperature gelled powder; then the gelled powder is mixed with waste plastic, and the gelled powder: waste plastic The weight ratio is =1:0.75; the crushed particle size of waste plastics is 10μ-120μ. Add chemical activator water glass and caustic soda, the water glass consumption is 20% of the weight of the gelled powder, and the caustic soda is 6% of the weight of the gelled powder. Add water and stir evenly, then press to form, the amount of water added is 42% of the weight of the gelled powder, demoulding with mold moisturizing curing, and then steam curing, steam curing is a combination of normal pressure steam curing and high pressure steam curing, first normal pressure stea...

Embodiment 2

[0022] Calcinate the bauxite dressing tailings at 850°C for 20 minutes; grind the fineness of the powder to a 180# sieve residue of less than 3%, and activate the tailings by weight: blast furnace slag: fly ash: Cement=55:20:20:5 is mixed with blast furnace slag, fly ash, and cement to prepare a low-temperature gelled powder; then the gelled powder is mixed with waste plastic, and the gelled powder: waste plastic The weight ratio is =1:0.75; the crushed particle size of waste plastics is 10μ-120μ. Add chemical activator water glass and caustic soda, the water glass consumption is 10% of the weight of the gelled powder, and the caustic soda is 3% of the weight of the gelled powder. Add water and stir evenly and then press to form. The amount of water added is 37% of the weight of the gelled powder. Moisturizing and curing with mold demoulding, and then steam curing. Steam curing is a combination of normal pressure steam curing and high pressure steam curing. Atmospheric pressur...

Embodiment 3

[0024] Calcinate the bauxite tailings at 820°C for 20 to 30 minutes; grind the powder until the fineness of the 180# sieve is less than 3%, and activate it. The weight ratio is activated tailings: blast furnace slag: pulverized coal Ash: cement = 55:20:20:5 ratio is mixed with blast furnace slag, fly ash, and cement to prepare a low-temperature gelled powder; then the gelled powder is mixed with waste plastics, and the gelled powder: The weight ratio of waste plastics is = 1:0.75; the crushed particle size of waste plastics is 10μ-120μ. Add chemical activator water glass and caustic soda, the water glass consumption is 15% of the weight of the gelled powder, and the caustic soda is 5% of the weight of the gelled powder. Add water and stir evenly, then press to form, the amount of water to be added is 40% of the weight of the gelled powder, and the mold is removed from the mold, followed by steam curing. The steam curing is a combination of normal pressure steam curing and high...

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Abstract

The invention relates to a method for preparing composite porcelain imitation wood prepared by bauxite tailings, which is characterized in that in the preparation process, calcination and grinding activation are carried out on the bauxite tailings, and then the bauxite tailings is mixed with blast furnace slag, pulverized fuel ash and cement, so that low temperature gelatinized powder can be prepared; after that, the gelatinized powder is mixed with waste plastics and added with chemical activator, and the mixture is added with water to be evenly stirred for forming by pressing; finally, after being moisturized with a mould, maintained and demoulded, the composite porcelain imitation wood product can be obtained after steam curing. The obtained product has excellent performance and simple production technique, utilizes a great deal of solid wastes such as tailings, waste plastics and the like, and reduces the harm of the solid wastes for the environment.

Description

technical field [0001] The invention relates to a method for preparing composite imitation porcelain wood from bauxite beneficiation tailings. Background technique [0002] With the industrialization of the "New Technology for Production of Alumina by the Bayer Process of Mineral Processing", various economic and technical indicators of the Bayer process technology for mineral processing have been continuously optimized, the cost of alumina production has been continuously reduced, and its technical advantages have become more and more significant. However, in the Bayer alumina production process of mineral processing, it is necessary to produce tailings accounting for about 20% of the weight of the raw ore during the mineral processing process. A processing plant with an annual processing capacity of 1.8 million tons of raw ore should produce nearly 400,000 tons of tailings on a dry basis. , The stockpiling of these tailings brings a series of problems such as environmental...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B3/00B28C7/04B28B11/24C04B28/08C04B18/20
CPCY02W30/91
Inventor 娄东民李太昌张召述刘伟赵东峰邢体义刘焦萍黄春成刘国红左林举王二星李国兵程旭卫星郑好民
Owner 中铝中州铝业有限公司