Fly ash ceramsite processing and forming process

Abstract

The invention provides a fly ash ceramsite processing and forming process. The fly ash ceramsite processing and forming process adopts the following equipment for processing, the equipment comprises a prescreening device and a screening device, the lower ends of the pre-screening device and the screening device are connected with the existing ground, and the pre-screening device is located on the left side of the screening device. According to the fly ash ceramsite processing and forming process, fly ash ceramsite needing to be crushed and screened can be preliminarily screened through the pre-screening device, the ceramsite with the very small particle size can be screened out, the situation that the ceramsite with the very small particle size is crushed into powder through a crushing unit can be avoided, and therefore the situation that the ceramsite with the particle size or the quality not meeting the requirement is mixed in the ceramsite screened out subsequently, and consequently the quality of the screened fly ash is low can be avoided.

Description

technical field [0001] The invention relates to the field of fly ash ceramsite, in particular to a process for processing and forming fly ash ceramsite. Background technique [0002] Fly ash is a kind of pozzolanic inclusions formed after coal powder is extinguished at low temperature, and fly ash is the main solid waste discharged from coal-fired power plants, and fly ash ceramsite is made of fly ash as the main raw material (85 %), mixed with appropriate amount of lime (or calcium carbide slag), gypsum, admixture, etc., a kind of artificial lightweight aggregate made by metering, batching, molding, hydration and hydrothermal synthesis reaction or natural hydraulic reaction, Ceramsite has the advantages of low density, high cylinder compressive strength, high porosity, high softening coefficient, good frost resistance and excellent anti-alkali aggregate reactivity; [0003] Many existing fly ash ceramsite processing and molding processes often use rotary kiln equipment to ...

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Problems solved by technology

[0004] 1. When most equipment crushes and screens ceramsite, it basically does not pre-screen ceramsite, which makes it easy for the crushing unit to break small-sized ceramsite into powder or smaller particles that do not meet the quality Therefore, the ceramsite that is screened out will often be mixed with ceramsite that has a particle size or quality that does not meet the requirements, reducing the quality of the ceramsite that is screened;

[0005] 2. In the process of crushing and screening, the falling speed of the broken ceramsite is so fast that the ceramsite is easy to accumulate on the sieve plate to a thicker thickness, and the sieve plate will also be blocked due to the accumulation of ceramsite Situation, which greatly affects the rate of sieving ceramsite and the effect of sieving

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