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Preparation process of high-strength hydrophobic ceramsite

A preparation process and hydrophobicity technology, which is applied in the field of recycling and reuse of industrial solid waste resources, can solve the problems of easy damage to the environment, poor purpose and strength of ceramsite, and high cost of raw materials, so as to reduce water absorption, increase density, and achieve good results Effect

Active Publication Date: 2017-03-08
河南祥盛陶粒有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims at the problems of high cost of raw materials and easy damage to the environment in the existing ceramsite preparation process, as well as the problems of poor purpose and strength of ceramsite formed by the traditional ceramsite preparation process for waste and slag passing through chemical enterprises, and provides A preparation process of ceramsite that can provide ceramsite with high strength and hydrophobicity

Method used

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  • Preparation process of high-strength hydrophobic ceramsite
  • Preparation process of high-strength hydrophobic ceramsite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: In the preparation process of high-strength hydrophobic ceramsite, the following steps are included:

[0024] (1) Raw material preparation: select the following ingredients according to the weight percentage for drying and crushing: 63% slag, 25% coal gangue, 7% fly ash, 5% clay powder, after primary stirring, pass through a 320 mesh sieve to form a particle size It is coarse powder less than 320 mesh and fine powder larger than 320 mesh. The slag is aluminum plant waste slag or aluminum sulfate plant waste slag, mainly Al 2 o 3 and SiO 2 Mainly, the waste slag from the aluminum plant or the waste slag from the aluminum sulfate plant as raw materials can meet the above-mentioned range of component distribution ratio.

[0025] (2) Secondary stirring: add MnO with a weight percentage of 2% to the coarse powder 2 and 5% TiO 2 , stir evenly; add the MnO that the weight percent content is 4% to the fine powder 2 , stir well.

[0026] (3) Granulation: Sen...

Embodiment 2

[0033] Embodiment 2: On the basis of the process of Embodiment 1, only one component in step (1) is modified, and the raw material composition by weight percentage in step (1) is optimized: slag 64%, coal gangue 23%, pulverized coal Ash 6%, clay powder 7%.

Embodiment 3

[0034] Embodiment 3: On the basis of the process of Embodiment 1, the following granulator structure is adopted. see figure 1 , a bracket 2 is set on the base 1, and a bearing seat 6 and a gearbox 5 are fixed on the bracket 2. The power shaft 7 is horizontally installed in the bearing seat 6, and the rear end of the power shaft 7 is connected with the output shaft of the gearbox 5 , the input shaft of the gear box 5 is connected to the power mechanism 3 through the transmission mechanism 4.

[0035]The front end of the power shaft 7 is connected with a ball-forming disc 18 . The specific structure is: a back support plate 13 is fixed on the back side of the ball forming disc 18, and one end of the power shaft 7 is hinged to the middle part of the back support plate 13 through the center shaft 16 (equivalent to being hinged at the center of the back of the ball forming disc 18 ). An auxiliary support plate 14 parallel to the rear side of the back support plate 13 is also arr...

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Abstract

The invention discloses a preparation process of ceramsite with high strength and hydrophobicity. The preparation process comprises the steps of raw material preparation, raw material drying, grinding, primary stirring and secondary stirring and auxiliary material adding. The preparation process has the beneficial effects that the grain rolling time is lengthened by firstly nucleating coarse powder and then adding fine powder in the granulation process; the product properties are improved through multiple times of different-temperature firing processes; the aim of waste utilization is achieved; auxiliary materials MnO2 and TiO2 in different ratios are added and are respectively used in the coarse material and the fine material so as to improve the properties of the ceramsite, such as strength; hydrophobic process treatment is also adopted, thus obviously reducing the water absorption of the ceramsite; multiple times of different degrees of firing processes are respectively adopted in the firing process to improve the sintering strength and properties; and the preparation process has the effect of increasing the density, strength and hydrophobicity of the ceramsite and is smooth in spherical grain surfaces and quite good in effects.

Description

technical field [0001] The invention relates to the technical field of recovery and reuse of industrial solid waste resources, in particular to a process for preparing high-strength hydrophobic ceramsite by using industrial solid waste. Background technique [0002] At present, in the existing preparation process of ceramsite, clay, shale, fly ash, coal mine strippings, loess, sludge, etc. are mainly used as main raw materials. Since the excavation of clay, shale, loess, sludge, etc. will cause soil erosion, environmental pollution, and damage to ecological balance, it is not suitable for popularization and application. On the other hand, the remaining industrial waste and slag from chemical enterprises, such as aluminum plant waste slag or aluminum sulfate plant waste slag, as well as coal gangue and fly ash, cannot be effectively treated and resource recycled. For example, landfill or composting is used to dispose of the remaining slag. Landfilling or composting is likely...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/00C04B33/132C04B33/135C04B33/138
CPCY02P40/60
Inventor 赵武营许松林李经三张建军
Owner 河南祥盛陶粒有限公司
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