Super-light sludge ceramic granules and preparing method

A technology of silt ceramsite and silt, which is applied in the field of building materials, can solve the problems of low water absorption, high strength, and secondary pollution, and achieve the effects of low water absorption, high strength, and avoiding secondary pollution

Active Publication Date: 2006-10-25
WUHAN MUNICIPAL CONSTR GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of ultra-light silt ceramsite and its preparation method. The prepared ultra-light silt ceramsite has a large number of honeycomb pores, high strength and low water absorption. And solve the problem of secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: Ultra-light silt ceramsite, which is extruded after being uniformly mixed in proportion by silt and coke, and formed through drying, pre-calcination, roasting and cooling; the mass ratio of each component in the raw material is: silt: coke =95%: 5%; The silt is the bottom silt of East Lake in Wuhan City.

[0014] The preparation method of the above-mentioned ultra-light silt ceramsite includes the following steps: 1). Pretreatment of raw materials: the silt is broken after filtration, deposition, homogenization, and drying, and the sieve residue above 0.075mm is removed; the content of CaO and MgO in the silt The total amount is less than 8% of the mass of the sludge, Na 2 O and K 2 The total amount of O is less than 6% of the mass of the sludge; for coke grinding, the fineness of raw materials should be controlled below 0.075mm. 2). Weigh the sludge and coke according to the proportion. The mass proportion of each component in the raw material is: sludg...

Embodiment 2

[0016] Embodiment 2: Ultra-light silt ceramsite, which is extruded after being uniformly mixed in proportion by silt and coke, and formed through drying, pre-calcination, roasting and cooling; the mass ratio of each component in the raw material is: silt: coke =90%: 10%; Silt is the mud at the bottom of the East Lake in Wuhan City, and the following examples are the same.

[0017] The preparation method of the above-mentioned ultra-light silt ceramsite includes the following steps: 1). Pretreatment of raw materials: the silt is broken after filtration, deposition, homogenization, and drying, and the sieve residue above 0.075mm is removed; the content of CaO and MgO in the silt The total amount is less than 8% of the mass of the sludge, Na 2 O and K 2 The total amount of O is less than 6% of the mass of the sludge; for coke grinding, the fineness of raw materials should be controlled below 0.075mm. 2). Weigh the sludge and coke according to the proportion. The mass proportion...

Embodiment 3

[0019] Embodiment 3: ultra-light silt ceramsite, it is formed by silt, coke mixed evenly in proportion, and formed through drying, pre-calcination, roasting and cooling; the mass ratio of each component in the raw material is: silt: coke =85%:15%.

[0020] The preparation method of the above-mentioned ultra-light silt ceramsite includes the following steps: 1). Raw material pretreatment: sludge removal, grinding, coke grinding, and the fineness of the raw material is controlled below 0.075mm. 2). Weigh the sludge and coke according to the proportion. The mass proportion of each component in the raw material is: sludge: coke = 85%: 15%; fully stir to make it evenly mixed. 3). Control the water content to 15%-30%, and use an extruder to shape the ceramsite raw meal. 4). The raw meal is dried at 100°C-200°C for 3h-5h, pre-fired at 450°C-650°C for 3min-10min, and high-temperature roasted at 1140°C-1180°C for 3min-10min. 5). Cool the roasted raw material to obtain ultra-light sil...

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Abstract

The invention relates to a pottery particle and the preparing method thereof. An ultralight silt pottery particle is characterized in that it is made from silt and coke, and its raw materials comprise: silt 60-98m%, coke 2-40m%, flyash 0-25m% and bauxite 0-25m%, where the sum is 100%. And its preparing method comprises preprocessing raw materials, selecting raw materials, moulding, drying, presintering, baking and obtaining finished product. And it has large numbers of cellular pores, higher intensity, and small water absorption. And the method can turn silt into resource and solves secondary pollution problem.

Description

technical field [0001] The invention belongs to building materials, and in particular relates to ceramsite and a preparation method thereof. Background technique [0002] Because of its outstanding advantages and characteristics such as porous internal structure and light weight, ceramsite has broad application prospects in modern high-rise buildings and long-span structures. The current ceramsite mostly uses clay, shale and fly ash as raw materials and is sintered at high temperature. Since clay is a high-quality resource with a wide geographical distribution, the vigorous development of clay ceramsite will inevitably lead to the destruction and loss of a large number of high-quality cultivated land; coupled with the implementation of policies and regulations such as the reform of national wall materials, clay ceramsite will definitely withdraw from the field of building materials. Shale is a natural resource, and its geographical distribution is uneven. The composition an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/13C04B33/04
Inventor 胡曙光丁庆军黄劲王发洲吕林女彭波
Owner WUHAN MUNICIPAL CONSTR GROUP
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