| High efficient energy-saving Rotary Calcining Kiln of gypsume production line (inc. desulfurize-gypsum, phosphogypsum and other industry gypsum etc.) manufactured by Huangshi Energy-saving Equipment in Building Material Factory consists of 16 patent techonologies possessed intellectual property completely. It’s heating source is supplied by GXDF type High Temperature Gas Boiling Furnace what has been listed in National Torch Programme, which would insure of cleaning combustion of coal. And State Committee of Economy and Trade, State Gerneral Bureau of Environmental Protection has written it into the Guide Contents of Cleaning Production for National Key Industries in 2003. JNTH-D type Calcining Kiln could manage drying, calcining and sieving in one chamber. It has a separating device at tail of kiln for wiping off impurities. And desulfurize-gypsum and phosphogypsum will be transmitted into separating device of gas and solid by tube. After modifing, storing, ageing and paking, such industry gypsum has been calcined to qualified gypsum products would be sent to on sale directly. It can use coal, oil or gas as its fuel. |
Main Characters： Burn-out rate of GXDF Coal Burning Boiling Furnace can reach to 99%, thermal efficiency can reach to 96%, and Ringelman Blackness of gas is class one. Solidifies 60～80% sulfur in furnaceand gas temp. can be adjusted between 300～950℃, also accord with standards demanded by environmental protection Rotary Drying & Calcining Kiln: integration of drying, calcining, sifting and products. Modify Mill: after calcining and to be modified, phosphogypsum and desulfo-gypsum can increase its specific surface area and strength, its gradation is more rationally and grain distribution is more widely. |
| If material accord with Standard Of Building Gypsum(GB/T9776-88), viz. when content of CaSO4.2H2O is more than 75% and also meets demands described in JC16 about A type gypsum of grade 3 or above grade 3, the products can reach standards of superior quality. |
Technology Data And Cost Of Gesso Production Line Products are ensured to stick paper without adhesive, and its strength is far more than other technology products. Solube phosphate can reduce 83% and solube fluoride can reduce 75%, which can cut down toxicity greatly. Phosphogypsum Material: of 60～95% on purity. Desulfo-gypsum Material: of 80～96% on purity. Design Formula of Desulfo-gypsum & Phosphogypsum: free water W1=10%, combined water W2=18% (in actual production, which also can be calcined when free water W1=5～25%, combined water W2 = 16～20%) |
| Technology Data For 100 Thousands Tons/Year Production Line Of Natural Gypsum Calcined By Coal Furnace (For Natural Dihytrate Gypsum) | ||||||||||||
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| ApplicationExamplesOfGessoProduction Line(Phosphogypsum/Desulfo-gypsum) |
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