Using quartz tailings to produce cement and glazed materials
Date: Jun. 09, 2021
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Utilization value of quartz tailings
The chemical properties of quartz tailings are relatively stable. It is used in cement, glass, wall materials, glass-ceramics, enamel materials, silica powder, industrial fillers, etc. lzzg tailings dry discharge equipment.
Production of cement
The chemical composition of quartz tailings meets the requirements of cement ingredients, and its low alkali content can be used as a substitute for siliceous raw materials; from the perspective of physical properties, although the quartz tailings can fully meet the fineness requirements after proper grinding. The only disadvantage is that the crystal structure of quartz tailings is dense, which will cause difficulties in calcination of clinker when used for batching. This shortcoming can be overcome as long as the batching plan is reasonably determined, the flammability of fly ash is fully utilized, and the operation of the kiln worker is strengthened.
Quartz tailings and fly ash replace clay ingredients to produce cement. The system effectively solves the problem of quartz tailings entering the mill. The addition rate of quartz tailings can be controlled within 6% to 8%, and the adjustment range is large, and the ingredients are stable.
Use lead-zinc tailings instead of sulfuric acid slag and burnt quartz tailings instead of clay to produce cement clinker. The added amount of burnt quartz tailings accounts for 6.5% of the raw meal. The clinker that meets the requirements can be calcined, which not only reduces the cost, but also improves Yield.
Quartz tailings are used to produce high-quality cement clinker. The ratio of quartz tailings is 2.6%, and free CaO is still showing signs of decline. Except that the initial setting time is 10-20 minutes longer than before, the strength of 1d and 3d is normal, but the strength increase rate is high. The 28d compressive strength is 64.7MPa on average, which is increased by about 2.5MPa. It can be mixed with 1.5% more mixed materials to obtain It has a good economic benefit.
Production of glazed tiles and ceramic glazed materials
Magnetite quartzite selected waste slag quartz iron sand, the quartz content is 58% to 62%, and the introduction of about 15% of the magnetite quartzite selected waste slag into the ceramic blank can improve the physical and mechanical properties of the ceramic body and the glaze layer, and can be effectively used It is used to produce thick black glazed wall ceramics.
Use ceramic industry waste residue to produce one-time-fired glazed bricks. The green body formula consists of 15% slate, 18% kaolin tailings, 35% slag, 22% albite tailings, and 10% quartz tailings, which reduces the cost of raw materials for glaze bricks. a lot of.
Sanitary ceramics can be produced by using waste quartz sand, purple wood knots, clay, etc., which effectively reduces the production cost of sanitary ceramics. Using kaolin, porcelain stone, quartz tailing powder, feldspar, mineralizers, pigments and other ingredients to fire sequined porcelain and sequined porcelain, the product has excellent performance, hygienic use, unique decorative effects, colorful and non-glazed Dissolved amount of lead and cadmium.
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