Anthracite Coal Filter Media
Anthracite filter media is a kind of water treatment industry filter with filter, using Shanxi anthracite as the raw material, after selection,crushing and screening and two appearance, good luster, spherical, high mechanical strength, good compression resistance, chemical stability, do notcontain toxic substance, abrasion resistance, acid, in neutral, alkaline not dissolve in water, in addition to coal particle surface roughness, have good adsorption capacity, high porosity (>50%), a higher content of dirt ability,because the light, required backwash low strength, can save a lot of backwash water and electricity.
Anthracite filter material characteristics:
- High efficiency and removal rate of 99%
- water treatment big
- Long service life
1, anthracite broken rate and the rate of wear and should not exceed 3% (percentage by mass, the same below).
2, the average density of the anthracite is generally not less than 1.4g / cm3, of not more than 1.6g / cm3.
3, anthracite should be free of visible dirt, shale and foreign debris. Clay content should not exceed 3%, greater than the density of the material content of 1.8g / cm3 should not exceed 8%.
4, Anthracite hydrochloric acid soluble rate should not exceed 3.5%.
Anthracite filter media's role in the filtering process will directly affect the quality of filtration, so the choice of this filter must meet the following requirements:
1, high mechanical strength, crushing rate and the wear rate of the sum should not exceed 3% (percentage by mass).
2, chemically stable, non-toxic substances. In general acidic, alkaline, neutral water, not dissolved. Water filter products manufactured by the China Supervision and Testing Center measured: Hydrochloric acid soluble rate of 0.68% (ministerial standard 3.5) in all types of water sources can achieve good purification effect.
3, the particle size with the management, large surface area. Product appearance of spherical and angular, gloss, three times by mechanical vibration screening, grading comply with the relevant technical specifications. Uniformity coefficient (K60) is not greater than 1.5 (Japanese standard), uniformity coefficient (K80) between 1.6-2.0, porosity greater than 50%.
4, the lower limit of particle size less than the specified size range by weight of not more than 5%, greater than the specified upper limit particle size by weight of not more than 5%.
Anthracite coal filter media physical and chemical preperties:
|Specific gravity g/cm3||1.4~1.6||Fixed carbon %||≥70%||Pb||0.045%|
|Bulk density g/cm3||1.0||Acid solubility %||≤1.28||Cu||0.028%|
|Wear rate %||≤0.8||Porosity %||47~53||Zn||0.04%|
|Grinding rate %||≤0.6|| || ||S||0.05%|
|Silt content %||≤2|| |
Application for anthracite coal filter media:
Anthracite filter is the best filter material is currently widely used. The main source of ore from Shanxi Jincheng and Yangcheng two coalfields. It uses a wide range of large adaptation range. Can be used for general rapid filter drinking water and industrial process water and various pool types. Two and three-filter, various water filters, water filters and chemical machinery, metallurgy, thermal power, pharmaceutical, paper, printing and dyeing, food production and water treatment before and after.
Anthracite filter use for water supply and industrial water filtration and purification treatment, according to the form of filter parameters to determine when the use of dual-media thickness of the pavement is 300-400mm; normal filtration rate 10-14m / h, forced filtration rate 14-1 8m / h; three filter pavement thickness 450mm, normal filtration rate 18-20m / h, forced filtration rate 20 ~ 25m / h. Rinse with water filter backwash, supplemented by surface wash or rinse water vapor.
Anthracite filter media used in conjunction with quartz sand is the promotion of China's current fast filter and three-filter, the best canister filter material is to improve the filtration rate per unit area increases exponentially increase the interception capacity of water and reduce the project cost and most effective way to reduce the area. Widely used in water treatment chemical, metallurgy, thermal power, pharmaceutical, paper, printing and dyeing, food and other production before and after the process.
1, the filter must be filled in before the filter (filter) inside cleaned.
2, to lay evenly on each filter, when it reaches the thickness of the calibration must be raked filter.
3, filter long run, there will be wear and tear.
Such as improper operation will "run stuff" happen. This is subject to regular inspection filter status, loss of material circumstances, if any, need to replenish. Such as the filter running time is too long, the long-term water quality is unclear, or the occurrence of chaotic layer filter layer, you need to replace or re-graded filter.
Usually 50kg white plastic woven bag in jumbo bag or pallet.
Store in a cool dry place, not exposure
1, the transport and handling: Anthracite in the transport process, not with an iron hook drag should prevent substance mixed with hard, not strong vibration, friction, foot, smashing prohibited throw, should care, and to reduce the anthracite media fragmentation, the impact of the use.
2. Storage: Store in a cool dry place to prevent rupture of the inner and outer bag to prevent moisture absorption and other substances in the air, affect the results. With no toxic gases or volatile substances mix, stored away from sources of pollution.
Test methods for wearing rate and grinding rate:
As fast filter and three-filter, one of the best material supporting layer canister filter, so, how to test Anthracite crushing rate and wear rate, in anthracite purchase is also very important, Here anthracite broken rate and test methods for the wear rate of the filter media with a detailed description:
First, the technical requirements of anthracite filter crushing rate and wear rate: broken rate and the rate of wear and should be less than three percent (3%).
Second, the test process:
1. A sampling: sampling from each batch of 5% of the total number of bags Anthracite product of not less than 3 bags. Use sampler vertically into the bag from the pocket center half depth. Then each bag was removed from the right amount of merger and shake well with the dichotomy reduced to about 4kg, and then loaded into a clean container.
2. The test: Take 50g sample anthracite filter, washed and dried, and then trapped by 1mm sieve aperture in aperture for the 0.5mm sieve, into diameter 50mm, height 150mm metal cylinder, then added six 8mm diameter steel balls, and then tightly closed cylinder cover, on the shaker shaken for 15 seconds, the shaker was adjusted to stroke 140mm, frequency of 150 times / min. Then remove the anthracite filter samples were weighed sample mass through the sieve for the quality of 0.25mm and 0.25mm sieve left on the sample.