The invention discloses a production technology for preparing calcium oxide and sulfur dioxide through utilizing desulfurized gypsum. The technology comprises the following steps: drying desulfurized gypsum at 230-300DEG C for 0.5-1.5h, wherein drying pretreatment is carried out at 40-50DEG C for...
a这是由于无水硫酸钙吸收热能后开始分解成氧化钙和二氧化硫造成的 This after is because the anhydrous calcium sulfate absorption heat energy starts to decompose the calcium oxide and the sulphur dioxide creates [translate] 英语翻译 日语翻译 韩语翻译 德语翻译 法语翻译 俄语翻译 阿拉伯语翻译 西班牙语翻译 ...
Calcium oxide Visit Store Product Description Seller Information Inquiry History Description Food-grade calcium A, molecular formula: CaO Second, the molecular weight: 56.08 Properties: white or gray block or particles, easy absorption of moisture in the air and carbon dioxide. Easy digest, under...
CALCIUM LANTHANUM SULFIDEcas:12525-03-0 calcium hydrogen sulfidecas:9046-53-1 Calcium sulfide (Ca(Sx))cas:1344-81-6 Calciumcas:7440-70-2 CALCIUMcas:14452-75-6 CALCIUM PEROXIDE, 75%, REM CALCIUM HYDRO X-IDE CALCIUM OXIDE, POWDER, -200 MESHcas:78403-22-2...
(i.e., ores that could be made to react with acids to produce salts (salis = salt, in Latin): chaux (calcium oxide), magnésie (magnesia, magnesium oxide), baryte (barium sulfate), alumine (alumina, aluminium oxide), and silice (silica, silicon dioxide)). About these "elements", ...
Powder Technology ,1995 ,85 (1) :115～126The use of a circulating fluidized bed absorber for the control of sulfur dioxide emissions by calcium oxide ... TC Keener,X Jiang 被引量: 55发表: 0年 The use of a circulating fluidized bed absorber for the control of sulfur dioxide emissions by...
The process of making calcium cyanamide involves three raw materials—coke, coal, and limestone— plus nitrogen. The limestone (calcium carbonate) is burned with coal to produce calcium oxide. The calcium oxide is then allowed to react with amorphous carbon in the furnace at 2000°C with the ...
crystal particle sizes of calcium hypochlorite and sodium chloride. The slurry in the upper part of the saltformer is separated to obtain a filter cake of calcium hypochlorite, which is dehydrated and dried to obtain a finished product, and the mother liquor is returned to digest calcium oxide....
absorbed with liquid alkali to generate sodium hypochlorite, and the waste gas is vented. sodium method: after the selected calcium oxide is digested with water and part of the mother liquor (from the subsequent process), the digestion emulsion is continuously filtered and used for standby; The ...
calcium oxide, and also contains trace amounts of sulfur, phosphorus, nitrogen and other impurities. With the increasing content of impurities, it color exhibits gray, brown to black. The melting point and electrical conductivity both decrease with the decrease of the purity. The purity of its ...