Calcium sulphate is decomposed at elevated temperature and in the presence of a carbon source into a calcium compound and sulphur dioxide. As starting material calciumsulphate anhydrite is used, which is obtained by recrystallizing crude phosphogypsum with H2SO4 at a concentration of 20-65 wt.-%...
Thehydrogen sulfite, Ca(HSO3)2, is made by the action ofsulfur dioxideon a slurry of Ca(OH)2. Its aqueous solution under pressure dissolves thelignininwoodto leavecellulosefibres and thus finds considerable application in thepaperindustry. ...
CALCIUM SULFIDE, with the chemical formula CaS and CAS registry number 20548-54-3, is a compound known for its applications in various industries. This compound is a yellowish-white solid, characterized by its calcium and sulfur elements. It is commonly used as a pigment in paints, as a ...
Its purpose in this field is to remove sulfur from various materials, such as coal and petroleum. The mechanism of action in desulfurization involves the reaction between CALCIUM BORIDE and sulfur compounds, resulting in the formation of less harmful substances. Storage Conditions: Store in a ...
Calcium - Compounds, Reactions, Role: The most important calcium compound is calcium carbonate, CaCO3, the major constituent of limestone, marble, chalk, oyster shells, and corals. Calcium carbonate obtained from its natural sources is used as a filler i
Gypsum is a fertilizer for supplying calcium and sulfur. Mined fertilizer-grade material is about 24% Ca. Gypsum is applied to soil to improve structure of clayey soils and is used in reclamation of saline soils. It is sparingly soluble but is an effective source of calcium. ...
Calcium forms alloys with aluminum, beryllium, copper, lead, and magnesium. It is used in the manufacture of other metals such as uranium and thorium. Calcium is used to remove oxygen, sulfur and carbon from alloys. Calcium from limestone is a vital component of Portland cement. ...
salt- a compound formed by replacing hydrogen in an acid by a metal (or a radical that acts like a metal) Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc. Want to thank TFD for its existence?Tell a friend about us, add a link to this...
yields calcium sulfide (CaS), which adds additional sulfur to give polysulfides, such as CaS2and CaS4. Calcium reacts with dry hydrogen at 300°-400°C to give the hydride CaH2, an ionic compound in which hydrogen is the anion. Calcium and nitrogen react at 500°C to give the nitride ...
1. The research-status and development of the high efficiency calcium-based compound sulfur retention sorbent during coal combustion is presented in this paper. 对燃煤高效钙基复合固硫剂的国内外研究现状进行了综述 。2) Ca-Si complex desulfurization reagent 钙硅复合固硫剂3) Calcium-based sorbent ...