Quartz sand factory direct Changsha Snow White corundum

Quartz sand filter is made from natural quartz ore, by crushing, washing, screening, pickling, drying, secondary screening made of a water filter; quartz sand filter used mainly two: one is Ordinary quartz sand; the other is the pickling of refined sand. Quartz sand: a big hardness, good corrosion resistance, high density, high mechanical strength, interception capability, long life cycle characteristics, is an ideal material for chemical water treatment. Play the role of quartz sand filter, like water infiltration into the ground through the gravel, like those suspended solids in the water block down, mainly for those fine suspended solids. 1. broken rate and the wear rate of the quartz sand and should not be a big 1.5% (percentage by mass, the same below); 2. the density of quartz sand filter should not be less than 2.55g / cm3. The use of density except special requirements; 3. quartz sand should not contain visible dirt, mica and organic impurities, filter flooding fluid should not contain toxic substances, clay content should not exceed 1%. The density of light material content of less than 2g / cm3 should not exceed 0.2%; 4. quartz sand filter LOI should not exceed 0.7% hydrochloric acid soluble rate should not exceed 3.5%. [1] quartz sand as filter material applications, quartz sand is combined with the filter container for trapping suspended solids in water colloidal particles of impurities, which play a filtering effect. Can be divided into the following categories: 1. Ordinary quartz sand: mainly used in sewage treatment, three to five years with no problem, as long as the quartz sand to prevent the loss of the line, is contaminated does not matter, because the sewage treatment sludge It can be aerobic or anaerobic respiration, the degradation of pollutants in sewage. 2. Refining quartz sand: used in water treatment, the sand filter, generally two to three years to be replaced, usually after being contaminated, contaminants wrap quartz sand filter can no longer play a good role in the It can only be replaced. Quartz sand through Iso9001-2000 quality system certification. Are stable in neutral and acidic water in the range of values, but there is little dissolved in alkaline water, chemical water treatment SiO2 increments of not more than 2mg /