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Manufacturing method of composite phosphorus slag powder
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A manufacturing method and technology of phosphorus slag powder, applied in cement production, etc., can solve the problems that phosphorus slag powder cannot completely replace cement, can not completely replace cement, reduce cement consumption, etc., to improve comprehensive utilization, meet quality requirements, save The effect of production costs
Inactive Publication Date: 2012-10-03
GUIZHOU KAILIN GRP CO LTD
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[0005] "A kind of phosphorus slag powder cement mortar" described in Chinese patent ZL200810301793.5 includes ordinary Portland cement, phosphorus slag powder, sand and water. Phosphorus slag powder is used to replace part of the cement and join the ready-mixed mortar to reduce cement dosage; but phosphorus slag powder cannot completely replace cement
"A kind of ready-mixed concrete with phosphorus slag powder" described in the patent application document with application number 201010140085.5, which contains cement, phosphorus slag powder, fly ash, etc., mainly uses phosphorus slag powder as a concrete admixture to partially replace cement Participate in ready-mixed concrete to reduce the amount of cement; its cinder powder can not completely replace cement
The patent application document with the application number 200810068787.X describes "a preparation method of superfine phosphorus slag powder", which is mainly to quench the phosphorus slag discharged from the yellow phosphorus furnace, and then go through drying, grinding and other steps to obtain phosphorus slag Ultrafine powder, which aims to use yellow phosphorus slag and yellow phosphorustail gas to produce phosphorus slag ultrafine powder, but its total production cost is relatively high
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Effect test
Embodiment 1
[0023] Put the coarse phosphorus slag in the rotary drum dryer, set the speed at 36 rpm, dry at 100°C, and dry until the moisture content is ≤2%; put the phosphogypsum in the rotary drum dryer, Set at 36 rpm, drying temperature at 70°C, and dry the phosphogypsum to a moisture content of ≤10%.
[0024] The coarse phosphorus slag, phosphogypsum, and siliceous shale are weighed with a weighing scale in a weight ratio of 6:1:3 and mixed evenly by a belt conveyor.
[0025] Put the mixed material into the mill and grind it into a powder material of 325 meshes, and then use DC series rotary vibrating sieve to test the sieve material and fineness of the mixed material, and the sieve residue is 5%.
Embodiment 2
[0027] Put the coarse phosphorus slag in the rotary drum dryer, set the speed at 36 rpm, dry at 200°C, and dry until the water content is ≤2%; put the phosphogypsum in the rotary drum dryer, Set at 36 rpm, drying temperature at 75°C, and dry the phosphogypsum to a moisture content of ≤10%.
[0028] The coarse phosphorus slag, phosphogypsum, and cement clinker are weighed with a weighing scale in a weight ratio of 6:1:3 and mixed evenly by a belt conveyor.
[0029] Put the mixed material into the mill, grind it into a powder material with a mesh size of 325, and then use the DC series rotary vibrating sieve to test the sieve material and fineness of the mixed material, and the sieve residue is 10%.
Embodiment 3
[0031] Put the coarse phosphorus slag in the rotary drum dryer, set the speed at 36 rpm, dry at 250°C, and dry until the water content is ≤2%; put the phosphogypsum in the rotary drum dryer, and set the speed to Set at 36 rpm, drying temperature at 80°C, and dry the phosphogypsum to a moisture content of ≤10%.
[0032] The coarse phosphorus slag, quicklime and siliceous shale are weighed with a weighing scale in a weight ratio of 6:1:3 and mixed evenly by a belt conveyor.
[0033] Put the mixed material into the mill and grind it into a powder material of 325 meshes, and then use DC series rotary vibrating sieve to test the sieve material and fineness of the mixed material, and the sieve residue is 15%.
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Abstract
The invention relates to a manufacturing method of composite phosphorusslagpowder. The manufacturing method mainly comprises the following steps: (1) drying coarse phosphorusslag and phosphogypsum; (2) mixing inorganic mineral materials; and (3) grinding and screening mixtures. The manufacturing method has the benefits that the composite phosphorusslagpowder produced by taking phosphorus slag as a raw material serves as a cementing material and can replace cement; the performance of the composite phosphorus slag powder meets the cement standard requirement; and the strength in the early period of the composite phosphorus slag powder serving as the cementing material to be used is not affected; the comprehensive utilization amount of phosphorus slag can be increased; and compared with the conventional cement technology, the production cost is reduced.
Description
technical field [0001] The invention relates to a method for manufacturing composite phosphorus slag powder, which belongs to the technical field of inorganic gelling materials. Background technique [0002] With the construction of a large number of southwest hydropower projects, phosphorus slag powder is widely used in the manufacture of concrete in actual projects. Phosphorus slag powder is a very good concrete admixture, which can completely replace fly ash and be used in large volume concrete projects. The use of phosphorous slag as a concrete admixture has the following advantages: greatly reducing the heat of hydration and adiabatic temperature rise of concrete; increasing the ultimate tensile value of concrete; using a reasonable dosage can increase the early strength and later strength of concrete respectively; phosphorus slag The unique retarding performance can satisfy large volume coagulation. At present, there are problems such as that phosphorus slag powder c...
Claims
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Application Information
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