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Composite Portland cement using green mud and basalt as mixed materials
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A composite silicate and basalt technology, applied in cement production, etc., can solve the problems of water pollution, land occupation, environmental hazards, etc., and achieve the effects of simple production process, resource and energy saving, and low cost
Active Publication Date: 2014-01-01
HAINAN LANDAO ENVIRONMENTAL PROTECTION IND
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[0003] Green mud refers to the waste produced after alkali recovery in the caustic chemical section of the papermaking process. If it is dumped, piled up or landfilled at will, it will cause great harm to the environment: 1. Occupy a lot of land; 2. Pollution of the air; 3. Pollution Water system, etc.
After searching, there is no relevant report about adding green mud as a composite Portland cement mixing material
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Embodiment 1
[0021] Production of P·C32.5R Composite Portland Cement
[0022] The chemical compositions of basalt, fly ash, furnace bottom slag, granulated blast furnace slag powder and green mud are shown in Table 1:
[0023] Table 1 Chemical composition of each component (mass percentage)
[0024]
[0025] The proportioning ratio of each component in the production of P C32.5R composite Portland cement is shown in Table 2:
[0026] Table 2 Unit: kg
[0027]
[0028] Wherein the activator is composed as follows (by weight):
[0031] According to the ratio in Table 2, dehydrate and dry the green clay until the water content is less than 1%, and then use it for later use, and then crush the basalt into crushed stones below 50 mm for later use. Mix basalt crushed stone (less than 50mm) with green clay (dried), fly ash, gypsum, cement clinker, and activato...
Embodiment 2
[0033] The chemical composition, activator composition, and production process of basalt, fly ash, bottom slag, granulated blast furnace slag powder, and green mud are the same as in Example 1.
[0034] The proportioning ratio of each component for producing P·C32.5R composite Portland cement is shown in Table 3:
[0035] Table 3 Unit: kg
[0036]
Embodiment 3
[0038] The chemical composition and production process of basalt, fly ash, furnace bottom slag, granulated blast furnace slag powder and green mud are the same as in Example 1.
[0039] The activator is composed as follows (by weight):
[0040] Triisopropanolamine 0.05kg, sodium silicate 1kg, active silicon dioxide 10kg.
[0041] The proportioning ratio of each component for producing P·C32.5R composite Portland cement is shown in Table 4:
[0042] Table 4 Unit: kg
[0043]
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Abstract
The invention belongs to the filed of buildings and relates to a building material, in particular to composite Portland cement using green mud and a basalt as mixed materials. The composite Portland cement comprises the following preparation steps of dewatering and drying the green mud till the moisture content is less than 1 percent, crushing the basalt into broken stones of which the grain sizes are 50 millimeters, mixing and feeding the basalt broken stones, the green mud, gypsum, an activating agent and a cement clinker into grinding equipment for grinding till the specific surface area is 330 m<2> / kg-350 m<2> / kg, drying in the grinding process, so that the moisture content of ground powder is less than 0.5 percent, and grinding to obtain the composite Portland cement. The composite Portland cement has the benefits that the production process is simple, a large quantity of easily-available abandoned corner stones in a basalt quarry, the green mud and other industrial wastes are taken as the mixed materials, the cost is low, the early strength and the construction performance of the composite Portland cement are effectively improved, resources and energy resources are saved, the industrial production is facilitated, and the environment friendliness is facilitated, the energy is saved, and the emission is reduced.
Description
technical field [0001] The invention belongs to the field of construction and relates to a construction material, in particular to a composite Portland cement using green clay and basalt as mixed materials. Background technique [0002] Composite Portland cement (code P·C) is a hydraulic cementitious material made of Portland cement clinker, two or more specified mixed materials, and an appropriate amount of gypsum. Referred to as composite cement]), the total amount of mixed materials in cement should be greater than 20% and not more than 50% by mass percentage. At present, the admixture materials used in composite Portland cement are granulated blast furnace slag in accordance with GB203-2008, pozzolanic mixed materials in accordance with GB2847-1996 and fly ash in accordance with GB1596-2005, and new ones in accordance with Appendix A of GB175-2007. Active mixed materials developed, such as ferrous slag, refined ferrochrome slag and other active mixed materials and poten...
Claims
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