Anthracite filter media is especially selected from the deep well minerals,so it contains the highest percentage of carbon.The raw material is always filtered and washed to make sure that the product can have good effect on water filtration.
Anthracite filter material is made of high-quality anthracite as raw material, which is processed by selective crushing,pulverizing, sieving and other processes.
Anthracite filter material in the process of filtering , directly affect the filtration of water quality, so the choice of the filter material must meet the following requirements:
1. High mechanical strength, crushing rate and wear rate should not be higher than 3% (by weight).
2. Stable chemical properties, without toxic and harmful substances. It is insoluble in ordinary acid, alkaline and neutral water.
3. The particle size distribution is reasonable and the specific surface area is good. The appearance of the product is spherical
and angular, glossiness is good, and it is screened by mechanical vibration for three times. The gradation accords with the
relevant technical indexes.
4. The particle size range is less than the specified minimum diameter, according to the weight is not greater than 3%, greater
than the specified upper limit of particle size, not more than 2% by weight.