Method for preparing geopolymer rubber composite material by utilizing spent FCC (fluid catalytic cracking) catalyst

Abstract

The invention discloses a method for preparing a geopolymer rubber composite material by utilizing a spent FCC (fluid catalytic cracking) catalyst. According to the method, spent FCC catalyst powder and fly ash serve as raw materials, an alkali activator is added to stimulate the activity of the spent FCC catalyst powder and the fly ash, waste rubber powder serves as filler, a proper amount of water is added, and stirring, forming and curing are carried out so as to prepare the geopolymer rubber composite material. The prepared geopolymer rubber composite material has the advantages that toxicand harmful substances such as heavy metal ions can be efficiently cured, meanwhile, toughening materials such as waste rubber are added, so that the disposal amount of the spent FCC catalyst is increased, and the toughness and strength of geopolymer are improved. The method has the advantages that the spent FCC catalyst which pollutes the environment can be safely disposed, the waste rubber is fully utilized, and in addition, the toxic and harmful spent FCC catalyst and the waste rubber which pollutes the environment are turned into wealth.

Description

technical field [0001] The invention relates to the field of resource utilization of solid waste, in particular to a method for preparing geopolymer rubber composite materials by utilizing FCC waste catalysts. Background technique [0002] In the catalytic cracking unit, because the catalyst is contaminated by heavy metals, the catalytic activity of the catalyst decreases rapidly and the reaction selectivity deteriorates. It is necessary to periodically discharge part of the balance agent and add new agent to ensure the activity and selectivity of the catalyst in the device. The resulting balancer is called catalytic cracking spent catalyst (hereinafter referred to as FCC spent catalyst). FCC waste catalysts have low catalytic activity and contain a certain amount of heavy metals, which are highly polluting. Unregulated random disposal will pose a serious threat to the human living environment. [0003] At present, research institutions at home and abroad mainly conduct res...

AI Technical Summary

Problems solved by technology

Chinese patent (such as CN104495924A, CN102586606) has introduced the method for reclaiming metal from FCC waste catalyst, yet the heavy metal content such as nickel, vanadium of FCC waste catalyst is low, as nickel element content is generally at 0.2-1.5%, therefore, extract economic value Low, and a large amount of acid and alkali solution is consumed in the recycling process, resulting in high cost and secondary pollution

However, geopolymers have problems such as poor impact strength, high brittleness, and insufficient toughness, which will cause the geopolymers to be easily broken and pulverized, which in turn will lead to easy leaching of heavy metals

[0007] The main sources of waste rubber include discarded tires, belts, pipes, industrial rubber products and rubber factory waste, etc. Whether waste rubber is piled up for burial or incineration, it will cause varying degrees of environmental pollution, energy waste, or occupy land

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