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Fly ash non-burned high-strength ceramsite and preparation method thereof

A technology of high-strength ceramsite and fly ash, which is applied in the field of fly ash-free high-strength ceramsite and its preparation, can solve problems such as environmental pollution, energy waste, and increased production costs, and achieve simple equipment, good recycling, and easy-to-handle effects

Active Publication Date: 2016-11-09
CHONGQING HAOPAN ENERGY SAVING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fly ash ceramsite emerged as the times require because of the excessive discharge of fly ash, which affects the environment. However, sintering steps are often used in the existing fly ash production process. It often needs large-scale sintering equipment to assist, which increases the production cost, so there are certain shortcomings

Method used

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  • Fly ash non-burned high-strength ceramsite and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1. A fly ash non-burning high-strength ceramsite, comprising the following components in parts by weight: 93.5 parts of fly ash, 2.95 parts of sodium silicate and 2.95 parts of calcium chloride.

[0017] Two, the preparation method of above-mentioned fly ash unburned high-strength ceramsite, comprises the steps:

[0018] 1) Weigh the raw materials according to the above formula, mix the binder and the reinforcing agent with water respectively, and prepare the bonding solution and reinforcing solution for later use; wherein, the mass volume ratio of the binder and reinforcing agent to water Both are 1:100;

[0019] 2) Pour the weighed fly ash into the ball plate, open the ball plate, spray the bonding liquid prepared in step 1) into the fly ash, turn it into a ball plate and roll it into a ball, and at the same time put the step 1) The prepared reinforcing liquid was sprayed on the surface of the sphere to prepare ceramsite with a diameter of 5 mm; among them, the diame...

Embodiment 2

[0022] 1. A fly ash non-burning high-strength ceramsite, comprising the following components in parts by weight: 94 parts of fly ash, 3 parts of sodium silicate and 3 parts of aluminum sulfate.

[0023] Two, the preparation method of above-mentioned fly ash unburned high-strength ceramsite, comprises the steps:

[0024] 1) Weigh the raw materials according to the above formula, mix the binder and the reinforcing agent with water respectively, and prepare the bonding solution and reinforcing solution for later use; wherein, the mass volume ratio of the binder and reinforcing agent to water Both are 1:105;

[0025] 2) Pour the weighed fly ash into the ball plate, open the ball plate, spray the bonding liquid prepared in step 1) into the fly ash, turn it into a ball plate and roll it into a ball, and at the same time put the step 1) The prepared reinforcing liquid was sprayed on the surface of the sphere to prepare ceramsite with a diameter of 20 mm; among them, the diameter of ...

Embodiment 3

[0028] 1. A fly ash non-burning high-strength ceramsite, comprising the following components in parts by weight: 94.5 parts of fly ash, 3.05 parts of sodium silicate and 3.05 parts of calcium nitrite.

[0029] Two, the preparation method of above-mentioned fly ash unburned high-strength ceramsite, comprises the steps:

[0030] 1) Weigh the raw materials according to the above formula, mix the binder and the reinforcing agent with water respectively, and prepare the bonding solution and reinforcing solution for later use; wherein, the mass volume ratio of the binder and reinforcing agent to water Both are 1:110;

[0031] 2) Pour the weighed fly ash into the ball plate, open the ball plate, spray the bonding liquid prepared in step 1) into the fly ash, turn it into a ball plate and roll it into a ball, and at the same time put the step 1) The prepared reinforcing liquid was sprayed on the surface of the sphere to prepare ceramsite with a diameter of 30 mm; among them, the diame...

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Abstract

The invention discloses a fly ash non-burned high-strength ceramsite and a preparation method thereof, wherein the ceramsite comprises the following components in parts by weight: 93.5-94.5 parts of fly ash, 2.95-3.05 parts of an adhesive, and 2.95-3.05 parts of an enhancer. The method comprises the steps: preparing an adhesive liquid and an enhancement liquid respectively from the adhesive and the enhancer with water; pouring the weighed fly ash into a ball formation disc, starting up the ball formation disc, spraying the adhesive liquid into the fly ash, rotating the ball formation disc, and rolling to form balls; at the same time, spraying the enhancement liquid to the surface of formed ball bodies to prepare ceramsite; and putting the ceramsite into a steam curing kiln, curing for 8-9 h, and thus obtaining the product. A sintering process is not required, and the high-strength ceramsite can be obtained; tests verify that the prepared fly ash ceramsite has the packing density of 800-900 kg / m<3>, the cylinder compressive strength of 7-8 MPa and the water-absorbing rate of less than or equal to 15% and has good quality.

Description

technical field [0001] The invention belongs to the technical field of ceramsite, and in particular relates to a fly ash non-burning high-strength ceramsite and a preparation method thereof. Background technique [0002] Fly ash is a kind of volcanic ash-like mixture formed after coal powder is extinguished at low temperature. It is a coal-burning power plant that grinds coal into coal powder below 100 microns, sprays it into the furnace with preheated air to form a suspended state, and produces thick low-temperature flue gas with a small amount of non-combustible matter, which is collected by dust collection equipment. of fly ash. The chemical composition of fly ash is similar to that of clay, and the main components are silicon dioxide, aluminum oxide, ferric oxide, calcium oxide and unburned carbon. Fly ash is the main solid waste discharged from coal-fired power plants. [0003] Ceramsite is a kind of lightweight aggregate, which can be used as a basic material for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/02C04B38/00
CPCC04B18/027C04B18/023
Inventor 陈域
Owner CHONGQING HAOPAN ENERGY SAVING TECH
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