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    Chemical gypsum powder making technology and equipment
    Release Time:2021-11-17
    Chemical gypsum powder making technology and equipment

    Chemical gypsum is the waste discharged by human beings in the process of production and environmental treatment, mainly including phosphogypsum discharged from the production of phosphoric acid, desulfurization gypsum discharged from power plant flue gas desulfurization. These two kinds of chemical gypsum are powdery, the appearance is generally gray and yellow, the relative density is 2.22 ~ 2.3 F, the bulk density is 0.733 ~ 0.88g/cm3, the particle diameter is generally 10 ~ 60um; the main ingredient is calcium sulfate dihydrate (CaSO4·2H2O), its content can reach 80 ~ 96%; β -Caso4 ·1/2H2O can be made into β -caso4 ·1/2H2O after drying and calcination. After reprocessing can be made into gypsum ball cement retarder, gypsum board, new wall plastering materials and other building gypsum products.
    Our company cooperate with related design institute, developed new technology of chemical gypsum calcinations and provide the main calcining equipment by our company, now has been successfully completed by using phosphorus gypsum and desulfurization gypsum 100000 tons/year and more than 300000 tons/year production line, solve the problem of industrial waste residue pile up and pollution, waste, having remarkable economic and social benefits; It opens up an effective way for the utilization of chemical gypsum.

    Technical festures:

    (1)This technology adopts reasonable technology, rapid dynamic calcination and dehydrating method to produce building gypsum powder, with large yield and low energy consumption, and complete the whole process of drying, calcination and crushing at one time without crushing. It overcomes the disadvantages of slow frying technology and is suitable for industrial large-scale production. The problems of phosphogypsum industrial waste residues and environmental protection were solved;

    (2) Product setting time, strength and other quality indicators can meet the national standard technical requirements, can replace natural gypsum production of building gypsum block, gypsum board, etc.;

    (3)Simple process, continuous automatic production, easy to industrial production; No dust leakage, no pollution, environmental protection standards;

    (4)Use automatic process, simplify process flow, low production cost.

    Technical parameters

    Technical parameters

    100000 tons production line

    200000 tons production line

    300000 tons production line

    Notes

    Gypsum powder yield

    100000 tons/year

    200000 tons/year

    300000 tons/year

     

    Gypsum raw material dosage

    130000 tons/year

    260000 tons/year

    390000 tons/year

    with natural water of 20%

    raw coal consumption

    4500 tons/year

    9000 tons/year

    13500 tons/year

    low calorific value 5000kcal/kg

    total installed capacity

    296kw

    410w

    500kw

     

    production staffing

    30 people

    32 people

    32 people

    Class 3 production 24 hours a day

    space cover

    4000m2

    6000m2

    8000m2

     

    production water consumption

    0.50000 tons/year

    10000 tons/year

    1.50000 tons/year

     

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