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Method for simultaneously extracting glass microbeads from fly ash and coproducing aluminum-silicon-iron alloy and white carbon black

A technology of glass microspheres and fly ash, which is applied in the field of waste resource recycling to reduce production costs, improve people's lives, and solve the effects of surface subsidence

Inactive Publication Date: 2012-12-19
ELION RESOURCE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, the object of the present invention is a method for extracting glass microspheres from fly ash and co-producing alsilicon and silica, so as to realize the comprehensive utilization of waste resources of fly ash, realize zero emission, and solve the problems of energy saving and environmental issues

Method used

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  • Method for simultaneously extracting glass microbeads from fly ash and coproducing aluminum-silicon-iron alloy and white carbon black
  • Method for simultaneously extracting glass microbeads from fly ash and coproducing aluminum-silicon-iron alloy and white carbon black

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Embodiment 1

[0044] Such as figure 2As shown, the fly ash is transported from the self-provided power plant to the sorting workshop and separated by a wind classifier to obtain glass beads, carbon powder and residual ash, and the obtained glass beads are further obtained by gravity separation, flotation, and magnetic separation beads, Shen beads and magnetic beads. Among them, the floating beads and sinking beads are coated with silane or titanate coupling agent accounting for 2-5% of the weight of the floating beads or sinking beads. (For example, take 100kg of floating beads or sinking beads, add 2~5kg of coupling agent) and use them as high-grade fillers after treatment (magnetic beads in glass microspheres can also be coated as fillers, but the effect is not as good as floating beads and sinking beads) , added to PVC (polyvinyl chloride), PP (polypropylene), PE (polyethylene), PS (polystyrene) and other thermoplastic materials for processing and modification, to produce different PVC...

Embodiment 2

[0048] Such as figure 1 As shown, the power plant fly ash is sorted to obtain floating beads, sinking beads, magnetic beads, carbon powder and residual ash. Take 100kg of floating beads, mix 2~5kg of silane and titanate coupling agent, and carry out coating treatment. As a high-grade filler, add it to PVC (polyvinyl chloride), PP (polypropylene), PE (polyethylene), PS (polystyrene) and other thermoplastic materials. Shenzhu is sieved to select a particle size of 200 mesh or more, which is coated according to the above method or directly added to thermoplastic products such as PVC, PP, PE, PS, etc., which is conducive to improving the mechanical properties and heat resistance of the product and reducing costs.

[0049] Mix 15kg of magnetic beads, 40kg of carbon powder, 25kg of residual ash, 9kg of clay, and 10kg of water (you can also add coal slime to provide carbon, bauxite to provide aluminum, silica to provide silicon and other raw materials), and roll and mix; mix well a...

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Abstract

The invention provides a method for simultaneously extracting glass microsbeads from fly ash and coproducing aluminum-silicon-iron alloy and white carbon black, relating to the technical field of cyclic utilization of waste resources. The method comprises the following steps: separating power plant fly ash to obtain floating beads, settling beads, magnetic beads, carbon powder and residual ash, wherein the floating beads and settling beads can be treated to be used as a high-grade filler which can be added into PVC (polyvinyl chloride) and other thermoplastic materials; adding clay and water into the magnetic beads, carbon powder and residual ash, mixing, granulating, drying, and smelting in a submerged arc furnace to obtain the aluminum-silicon-iron alloy; dipping the residual ash in alkali to obtain a sodium silicate mixed solution, and introducing CO2 to obtain the white carbon black; and sending the rest of residual ash into a coal mine goaf to carry out filling. The invention comprehensively utilizes high-value resources in the fly ash, and fully utilizes the energy; and the invention lowers the cost of the plastic products, lowers the energy consumption, reduces the emission of CO2, and implements zero discharge of waste, thereby having significant economic benefit and environmental value.

Description

technical field [0001] The invention belongs to the technical field of waste resource recycling, and in particular relates to a method for extracting glass microspheres from fly ash and co-producing alsilicon ferroalloy and white carbon black. Background technique [0002] Boilers in modern thermal power plants use pulverized coal as fuel. When sprayed into the furnace, they burn in the form of fine particles or clusters to fully release heat energy. The ash after combustion is different according to the ash content of the raw coal, and generally accounts for 15% to 40% of the raw coal mass. The fine dust collected by the dust collection facility from the ash exhaust system is fly ash or fly ash, accounting for about 10% of the total ash. Slag 70%~80%. Fly ash is a powdered mineral resource produced by artificial processes that does not exist in nature, which contains silicon, aluminum, iron, calcium, and small amounts of magnesium, titanium, sulfur, potassium, sodium, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/08C22B7/02C01B33/12
CPCY02P10/20Y02W30/91
Inventor 孙加亮刘珊刘建辉周明吉周玉生顾卫荣
Owner ELION RESOURCE GROUP
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