Process of preparing portland cement with waste ceramic tile polishing material

A technology of ceramic polished bricks and Portland cement, which is applied in the direction of cement production, etc., can solve the problems of difficult sustainable development of the cement industry, shortage of natural resources, ecological environment pollution, etc., and achieve the goal of protecting farmland, saving natural resources and reducing pollution Effect

CN100412020CInactive Publication Date: 2008-08-20SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2008-08-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention discloses process of preparing Portland cement with waste ceramic tile polishing material. Portland cement clinker in 77-84 wt%, setting retarder gypsum in 3-6 wt% and mixed material in 10-20 wt% are mixed and ball milled in a ball mill to form Portland cement of specific surface area 350 sq m / kg, where the mixed material comprising waste ceramic tile polishing material of 3-6 wt%, mineral slag of 4-8 wt% and flyash of 3-6 wt%. Using waste ceramic tile polishing material as partial material for Portland cement can dispose waste, save resource and raise production efficiency.
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Description

technical field

[0001] The invention belongs to the technical field of cement preparation, and specifically refers to a method for preparing portland cement by using ceramic polished brick waste. Background technique

[0002] Foshan is the largest production base of architectural ceramics in the country. At present, about 1.3 million tons of ceramic polished tile waste (dry material) is produced every year, which seriously pollutes the surrounding environment. However, the degree of treatment and comprehensive utilization of polished tile waste is relatively low, and most of them use The method of landfill has resulted in a large amount of waste crowding out cultivated land, polluting water and air.

[0003] From the chemical composition point of view, the polished brick waste is mainly oxides of silicon, calcium and aluminum, containing a small amount of oxides of potassium, sodium and magnesium, silicon carbide, and flocculants added during sewage treatment, because it is ...

Examples

Embodiment 1

[0037] The method for preparing portland cement by utilizing ceramic polished brick waste materials comprises the steps of:

[0038] (1) Pretreatment of ceramic polished tile waste: First, the ceramic polished tile waste that has been dried in the sun and contains about 20% water from the ceramic polished tile factory is first ground in the equipment of the roller press, and then sieved to remove large Block or fibrous impurities make it a non-cohesive, fluid and uniform powder.

[0039] (2) Pretreat the ceramic polished tile waste according to step (1) to make it a non-bonding, fluid and uniform powder, replace about 25% of the clay raw material ingredients, and make the ceramic polished tile Waste: Limestone: Clay: Iron Calibration raw material: Fluorite: Phosphogypsum: Anthracite is made into cement raw meal according to the weight ratio of 2.5:76.0:5.2:3.1:0.8:2.5:12, and the cement raw meal saturation ratio KH is controlled to be 0.91 ~0.94, silicic acid rate N is 1.90~2...

Embodiment 2

[0046] The method for preparing portland cement by utilizing ceramic polished brick waste materials comprises the steps of:

[0047] (1) Pretreatment of ceramic polished tile waste: First, the ceramic polished tile waste that has been dried in the sun and contains about 20% water from the ceramic polished tile factory is first ground in the equipment of the roller press, and then sieved to remove large Block or fibrous impurities make it a non-cohesive, fluid and uniform powder.

[0048] (2) Replace 25% of the clay raw material with the pretreated ceramic polished tile waste as previously described, and use the ceramic polished tile waste: limestone: clay: iron correction raw material: fluorite: phosphogypsum: anthracite by 2.0: 75.0: 4.5 : 3.0: 0.7: 2.0: 11 weight ratio to make cement raw meal, control the cement raw meal saturation ratio KH is 0.91 ~ 0.94, the silicic acid rate N is 1.90 ~ 2.05 and the aluminum oxygen rate P is 1.4 ~ 1.6. The ball forming disc is made into ...

Embodiment 3

[0055] The method for preparing portland cement by utilizing ceramic polished brick waste materials comprises the steps of:

[0056] (1) Pretreatment of ceramic polished tile waste: First, the ceramic polished tile waste that has been dried in the sun and contains about 20% water from the ceramic polished tile factory is first ground in the equipment of the roller press, and then sieved to remove large particles. Block or fibrous impurities make it a non-cohesive, fluid and uniform powder.

[0057] (2) Replace 25% of the clay raw material with the pretreated ceramic polished tile waste as previously described, and use the ceramic polished tile waste: limestone: clay: iron correction raw material: fluorite: phosphogypsum: anthracite according to 3.0: 77: 5.8 : 3.2: 0.9: 3.0: 13 weight ratio to make cement raw meal, control the cement raw meal saturation ratio KH is 0.91 ~ 0.94, the silicic acid rate N is 1.90 ~ 2.05 and the aluminum oxygen rate P is 1.4 ~ 1.6. The ball forming...