Autoclaved aerated concrete prepared by utilizing waste FCC catalyst and preparation method thereof

An autoclaved aeration and catalyst technology, applied in the field of aerated concrete, can solve the problems of land occupation, environmental pollution, refractory degradation, etc.

Pending Publication Date: 2019-12-06
山东京博环保材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the refractory degradation of waste thermal insulation rock wool produced during the maintenance and technical transformation of industrial production equipment, large areas of waste rock wool have been piled up for a long time, occupying land resources, or dumped and buried in large quantities, causing serious environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The waste FCC catalyst used in the present invention is the solid white powdery waste of our group petrochemical company after recycling, and its main components are silicon dioxide (about 37%) and aluminum oxide (about 45%). Waste FCC The addition of the catalyst reduces the drying shrinkage value of the air-entrained concrete product while ensuring the strength of the product, and stabilizes its application performance.

[0037] Waste FCC catalyst is reused to prepare autoclaved aerated concrete, which is characterized in that: in parts by weight, the raw material ratio is: 40 parts of tailings sand containing silicon, 8 parts of spent FCC catalyst, 12 parts of lime, 12 parts of cement, and desulfurized gypsum 5 parts, 0.15 parts of aluminum powder paste, 15 parts of slag, 8 parts of waste rock wool fiber;

[0038] The waste FCC catalyst is a white powdery solid waste that loses activity after recycling in the petrochemical industry of our group, and its main componen...

Embodiment 2

[0055] The waste FCC catalyst is reused to prepare autoclaved aerated concrete, which is characterized in that: in parts by weight, the raw material ratio is: 45 parts of tailings sand containing silicon, 7 parts of spent FCC catalyst, 13 parts of lime, 13 parts of cement, and desulfurized gypsum 5 parts, 0.15 parts of aluminum powder paste, 12 parts of slag, 5 parts of waste rock wool fiber;

[0056] The waste FCC catalyst is a white powdery solid waste that loses activity after recycling in the petrochemical industry;

[0057] The density of the autoclaved aerated concrete prepared by reusing the waste FCC catalyst is 487kg / m 3 , The average compressive strength is 4.3MPa, the minimum value of a single group is 3.4MPa, and the drying shrinkage value is 0.25mm / m.

[0058] Its concrete preparation steps are:

[0059] Take each raw material in proportion and set aside;

[0060] Mix the silicon-containing tailings sand with water, add slag and waste rock wool fibers that have...

Embodiment 3

[0073] The waste FCC catalyst is reused to prepare autoclaved aerated concrete, which is characterized in that: in parts by weight, the raw material ratio is: 48 parts of silicon-containing tailings, 6 parts of spent FCC catalyst, 10 parts of lime, 11 parts of cement, and desulfurized gypsum 6 parts, 0.15 parts of aluminum powder paste, 10 parts of slag, 9 parts of waste rock wool fiber;

[0074] The waste FCC catalyst is a white powdery solid waste that loses activity after recycling in the petrochemical industry;

[0075] The density of the autoclaved aerated concrete prepared by reusing the waste FCC catalyst is 490kg / m 3 , The average compressive strength is 4.5MPa, the minimum value of a single group is 3.6MPa, and the drying shrinkage value is 0.30mm / m.

[0076] Its concrete preparation steps are:

[0077] Take each raw material in proportion and set aside;

[0078] Mix the silicon-containing tailings sand with water, add slag and waste rock wool fibers that have been...

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Abstract

The invention relates to the field of the aerated concrete, and specifically relates to an autoclaved aerated concrete prepared by utilizing waste FCC catalyst and a preparation method thereof. The autoclaved aerated concrete product is prepared after pulping and grinding the waste FCC catalyst to reach a certain process requirement through the optimization and improvement of the formula, the effective constituents are sufficiently utilized to participate into the hydration reaction, and a regulation effect on the cementing material can maximize the performance of the aerated concrete product,so that the waste FCC catalyst resource can be maximally utilized, the circular economic cleaning production is realized, the land is saved, the concrete product with excellent performance is obtained, and the aerated concrete is worthy of widely popularizing and using.

Description

technical field [0001] The invention relates to the field of aerated concrete, in particular to an autoclaved aerated concrete prepared by using waste FCC catalyst and a preparation method thereof. Background technique [0002] Spent FCC catalyst is a solid waste generated during the most important secondary processing in the oil refining industry. With the heavy and inferior quality of petroleum resources, the quality of raw materials is getting worse and worse, the catalyst replacement cycle is significantly shortened, and the amount of spent FCC catalysts discharged is also increasing year by year, and most of them cannot be reused. At present, most of the waste FCC catalysts are disposed of by landfill in China, but the main component of waste FCC catalysts is Al 2 o 3 , SiO 2 And a certain amount of Ca, Fe, Mg and other metal oxides. Therefore, such practices not only take up a lot of land resources, but also waste resources. [0003] Although there is a way to reu...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B28/00C04B40/02
CPCC04B28/00C04B40/024C04B2111/40C04B2201/20C04B2201/50C04B18/0427C04B18/12C04B18/064C04B22/04C04B22/064C04B18/142C04B14/46C04B38/02C04B38/0067
Inventor张童鑫马韵升史庆苓汪君华崔东波王明军胡建朱庆强赵春花
Owner山东京博环保材料有限公司