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gypsum powder making machine 30000- 500000 tons per year by natural gypsum

gypsum powder making machine 30000- 500000 tons per year by natural gypsum

    • gypsum powder making machine 30000- 500000 tons per year by natural gypsum
    • gypsum powder making machine 30000- 500000 tons per year by natural gypsum
    • gypsum powder making machine 30000- 500000 tons per year by natural gypsum
  • gypsum powder making machine 30000- 500000 tons per year by natural gypsum

    Product Details:

    Place of Origin: China
    Brand Name: LVJOE
    Certification: SGS,ISO
    Model Number: LVJOE202003

    Payment & Shipping Terms:

    Minimum Order Quantity: 1 set
    Price: USD250000/ set
    Packaging Details: package which is suitable for long distance shippment
    Delivery Time: 90 working days
    Payment Terms: T/T, L/C
    Supply Ability: 6 sets per year
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    Detailed Product Description
    Name: Gypsum Powder Making Machine Raw Material: Gypsum Stone
    After-sale Service: Installation, Commossioning, Online Support Fuel: Coal, Natural Gas, Heavy Oil
    Advantage: Simple Structure & Low Engery Consumption Heat Resouce: Boiler
    Automation: Automatic

    Product Name:

    High quality gypsum powder calcination production line

    gypsum powder calcination production line

    gypsum powder production line

    plaster of paris powder production line


    Product Description:

    Calcination System fludized bed furnace or rotary kiln
    Main Materials Natural gypsum rock, chemical gypsum such as desulfurization gypsum, phosphorizaiton gypsum
    Standard of Product Quality national standard "GB/T 9776-2008 construction gypsum"
    Product Quality reach or exceed the china (GB9776-88 building gypsum) requirements


    I Brief introduction
    1. The gypsum stone is crushed into granuleless than 25mm with crusher. It's stored in raw material silo, then conveyed into grinding mill to make gypsum powder. The powder is classified through a classifier. The qualified powder in required fineness shall be carried to the calciner, while the unqualified powder shall be returned to the grinding mill for further process. The calcined gypsum powder (it's usually called Plaster of Paris shall be stored in the finished product silo for preparation of plasterboard raw material.
    High quality gypsum powder calcination production line High quality gypsum powder calcination production line

    II Fluidized bed calcining process:
    As the gypsum industry developing, the gypsum powder demand becomes larger and larger in many fields. Meanwhile the requirement for gypsum powder quality becomes stricter. Therefore the gypsum powder process improves gradually. Drying and dehydrating
    the raw gypsum powder is a critical process and the most difficult to control. After many years of research and experiment we have successfully developed the advanced calcining device- fluidized bed calciner, suitable for all kinds of gypsum powder production.

    2.1 working principle
    The fluidized bed calciner mainly is composed of dense
    small diameter piping coils which radiate heat of enclosed thermal oil through heat exchanger. At the bottom of the calciner a roots blower is installed.
    The blower sucks cold air into the calciner through the grid plate. The blown raw powder inside the calciner becomes boiling. At certain temperature the dried and dehydrated gypsum powder turns lighter and overflows out. The finish powder has a stable quality, and its crystal water content and final setting time are easy to control. The calciner is equipped with high efficient (more than 95%) dry electrostatic precipitator to control air pollution.

    2.2 Simple structure and long service life
    Because the gypsum powder is fluidized during calcinating process, the calciner doesn't have rotary unit. The fluidized bed calciner structure is simpler than the traditional calciner. It's easy to manufacture. Almost no maintenance work is required from starting to production. The working heat source is low temperature that won't burn out the calciner at any circumstances. Thus it has a very long service time.

    2.3 Compact and less land occupation
    The calciner is vertically installed. The dust collector covers the top of the calciner to avoid dew
    . The two units in cooperate together. They take less land occupation.

    2.4 Low energy consumption
    The fluidized bed calciner has low heat energy and electricity consumption. Heat energy: from heat source to raw gypsum powder only little quantity of heat are lost for cold air sucken by blower and calciner body, most heat energy is used for dehydrating the gypsum powder. Its heating efficiency factor is more than 95%. However it's the second heat source of calcination. The ultimate heating efficiency shall be two efficiency factors multiplication
    of calciner and boiler. Steam boiler and thermal oil boiler are mature technology with high heat efficiency. The steam boiler efficiency usually reaches 60-70%, thermal oil boiler is 70-80% (we adopt for the calcination system).So the ultimate heat efficiency shall be 57-67% with steam boiler, and 67-76% with thermal oil boiler. Usually the traditional direct fired calciner use the first heat source (suitable fuel) directly which heat efficiency is less than 50%.The index of heat consumption of fluidized bed calciner is 7.7×105KJ/1000kgs gypsum. Electric energy: The fluidized bed calciner has no stirring device inside. The gypsum powder is fluidized with steam only. The blown cold air is not much. It just needs a small power blower. Therefore the fluidized bed calciner saves more electric energy than the traditional direct fired calciner.

    2.5 The finished powder has good quality, ideal composition and stable physical property
    As for low calcining temperature the raw gypsum powder is hardly overheated. Just take care to control the outlet temperature. The finished powder shall not have dehydrate gypsum
    , the dehydrate gypsum content shall be within 5%, other is semi hydrated gypsum. The composition is ideal and the powder has a stable physical property.
    To meet the above requirement for good quality product we already developed a whole set of calcination system for gypsum powder. The equipment is mainly made of high quality steel. For example, the thermal oil piping coil is made of high quality seamless steel pipe (applied Standard: GB3087-82).Steel plates are carbon steel or low alloy steel special for boiler use (applied standard: GB713-86).Supporting stand is made of China national profile steel. In addition when welding the parts, the operator is required to have welding professional certificate. The prime thermal oil pipe coil shall have water pressure test, tested water pressure 0.5-0.6Mpa for more than 30 minutes. During the test period any water leakage is not allowed. No leakage means passed quality.



    IV Workers per day & per shift

    The crushing system: 2 workers/day (including the forklift driver)
    Grinding system and calcining system: 2 workers/8 hours (6 workers/ day)
    Heating supply system: 2 workers/eight hours (6 workers/ day)
    Electrician: 1worker/day
    Mechanic: 1 worker/day
    Total: 16 workers


    V Capacity

    The time of production: 330 days/year×24 hours
    The output of one hour: ≥8T/hour (finished powder)

    VI Quality of final production
    Equal to or exceeding the requirement of the national calcined gypsumstandard

    VII The requirement of the environment:
    The output of the dust of the high-voltage electrostatic dust collector reaches to the local environment demands

    VIII The related parameter of the product (GB9776-88 calcined gypsum)
    1. Fineness:≥80 mesh
    2. Antiflex strength (it is related to the raw material): ≥1.8Mpa; compression strength: ≥3.0Mpa
    3. Main component:
    semi-hydrated gypsum content: ≥80% adjustable
    dehydrate gypsum content: <5% adjustable
    Soluble anhydrous gypsum: <5% adjustable
    4. The initial setting time: 3~8min adjustable;
    The final setting time: 6~15min adjustable
    5. Standard consistency: 78~85% adjustable


    Company Information:

    Hebei Lvjoe Machinery Manufacturing Co., Ltd. is professional in designing and manufacturing all kinds of

    industrial equipments. Our company has 300 workers, more than 80 sets of processing machines, including

    2 sets of planer machines, one set of milling machine, 2 sets of boring machines, 50 sets of lathes and 3 sets

    of PLC processing centers.In the last few years we have successfully developed many kinds of industrial equipment including gypsumboard production line, gypsum board lamination machine, gypsum powder production line, gypsum block production line, mineral wool board production line.


    Welcom your visit to our factory!!!


    Contact Details

    Tel: 0086 15830976083

    Send your inquiry directly to us (0 / 3000)

    No. 17 , Nanyan Road, Shi Jiazhuang, Hebei, China.
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