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Run the main material of concrete brick machine

Currently, the production of concrete brick machine is mainly due to the use of raw materials for Cement-based and normal sand, artificial light aggregate (such as expanded perlite ceramic, clay ceramic material and fly ash material), natural units (such as pumice, volcanic ash and zeolite), industrial waste lightweight aggregate (such as fly ash, slag, coal spontaneous combustion, coke slag slag slag expanded beads and calcium) and other light Coarse aggregate.

1. Cement: The more than 32.5 Portland cement, Portland cement (GB175-1999) and Portland slag cement (GB1596-91), usually used when the summer Production of blast furnace cement. Should not be used pozzolana cement and fly ash cement.

SiO2 content of the ash at all levels more than 40% Al2O3 content of more than 15%, bulk density of 516 ~ 107kg/m3, particle density 1800 ~ 2400kg/m3. In general, calcium, dry fly ash, the Gray Ⅰ Ⅱ and for more than 13MPa Property class blocks that can only be used for fly ash Ⅲ intensity of the block is not greater than 10 MPa.

Second Carbide: Carbide is the power stone (CaC 2) production of waste are produced when acetylene. Carbide slag and hydrated lime in the composition and nature of similar Ca (OH) 2 content of the Usually 60% -80% (dry weight). Wet process in China to take more than acetylene, carbide high water content, can be focused by precipitation. Carbide Hair Color blue, a slight odor, but harmless. If it does not use alternative to hard metal fresh lime, is generally not use hydrated lime, quick lime, if necessary, before milling fineness is 0.080 mm mesh size not more than 25% margin. Requirements effective quicklime calcium oxide content not less than 70%, the higher the better, if less CaO content can increase the calcium content. Lime in the MgO content of less than 4%, as the product easy to burst. Power plants, chemical plants discharged waste lime or shell powder can also Authority's use of hard metal.

4, Gypsum: Gypsum is to require more than 65% calcium sulfate, and phosphogypsum (phosphate fertilizer industry, solid waste, of which P205 content of less than 3%) instead.

5. Slag: fly ash and its main components and the same density 600-900kg/m3, particle density 1100-1800kg/m3; Loss on ignition ≤ 20%, MgO content of less than 4%, CaO content of less than 5%, SO 3 content of less than 4% to pass test volume stability, particle size 0.16-10mm, the fineness modulus between 2.4 to 4.2 will be.

6. Sand: After the fineness modulus (Mx) in coarse sand are divided (Mx is 3.7 to 3.1), medium Sand (Mx is 3.0 to 2.3), fine sand (Mx to 2.0 to 1.6) and fine sand (Mx to 1.5 to 0.7). This product fineness sand between Mx-E is 3.7 to 1.6, the mud content should be less than 3%, measures the flow of sand.

7. Gravel: gravel or pebbles, the size of more than 5 mm, less than 8 mm.

8. Industrial waste: including fly ash, slag, waste slag, tailings, slag, construction debris (slag, brick, concrete residue), coal and so on. The industrial waste residue can be used in conjunction with its technical requirements are as follows: the residue of the loss on ignition of not more than 20%, SO3 ≤ 2%, the rest of the sand particle size 0,3-1.3 mm, 0.1mm powder content of ≤ 20% are listed below on behalf of the sand used, the rest the gravel grain size of 3-15mm, ≤ mud content 3%, when used instead of gravel. The waste cycle of 13% weight loss.

Coal is the roof, the floor and the seam in the rock. Coal is not a single stone, but a mixture of carbon material and rock, the instability there, the burning of coal to spontaneous combustion The use of artificial or spontaneous combustion is not a small coal softening coefficient of 0.8, cooking loss rate of less than 5%, loss on ignition of not more than 5%. Slag should be placed more than 6 months, SO3 content of not more than 1% and can not refuse, weeds and so on.

Calcium high-temperature furnace slag is a Whirlwind of liquid slag, the temperature is typically 1200-1400 ℃, slagging of the bottom when I overflow by water quenching, water quenching broke into a chilled 2-10mm of solid particles from water as a glassy slag slag or liquid calcium residue, also called slag, slag contains calcium and other active components CaO, SiO 2 content is high, still determined by the detection of non-active material. Calcium slag quenching by water quenching, there is the particle within the cracks and internal stress, large brittle grains, small grains was very strong, so the calcium residue must be broken.

9. volcanic ash: a volcanic eruption of the material, porous, lightweight and toughness and strong features, better insulation, heat insulation, sound deadening effect. Natural Packing density 580-800kg/m3. Breaking strength around 3 MPa.

10. Pumice: It is a natural lightweight aggregate. 350-800kg/m3 density, breaking strength of 1.6MPa. So, as their low compressive strength of pumice stone, pumice concrete strength is not as high, but its good thermal insulation.

11. Light unit: including ceramic clay, fly ash, ceramic, perlite, floating pearl, slate, pumice, volcanic slag line (GB/T17431.1-1998) requirements, (is gauge E-2 ,3-4, 0 if necessary) the maximum grain diameter of 10mm with clay content <3%.

12. JFS activator: JFS-activator is a core material of this product, its full activation of fly ash, some of the possible residue of industrial wastes play a crucial role. Verified by production practice, JFS activator successful, less content, the use of cost not high, can significantly activate the activity of fly ash and slag to improve the density of the brick machine, resistance, frost resistance, carbonation stability, Water resistance and shrinkage control, so that the block significantly increases strength and durability.

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