Calcium silicate CaSiO

The limestone is present to convert sand or quartz, Si02, which is present as an impurity in the ore, to calcium silicate, CaSiOs. [Pg.481]

Then the roasted ore is combined with sand, powdered limestone, and some unroasted ore (containing copper(II) sulfide), and heated at 1,100°C in a reverberatory furnace. Copper(II) sulfide is reduced to copper(I) sulfide. Calcium carbonate and silica react at this temperature to form calcium silicate, CaSiOs The liquid melt of CaSiOs dissolves iron(II) oxide forming a molten slag of mixed silicate ... [Pg.254]

As time evolved and the energy provided by the sun increased, the gradual removal of carbon dioxide from the atmosphere became critical to avoid a runaway greenhouse effect (with extremely high surface temperatures) as observed on Venus. This removal of CO2 was accomplished by weathering of calcium silicate (CaSiOs) minerals by acidic C02-rich rainwater, leading to the formation of limestone (CaC03). [Pg.4]

Hydrofluoric acid (HF) is used in the manufacture of electronics equipment. It reacts with calcium silicate (CaSiOs), a component of glass. What type of property prevents hydrofluoric acid from being transported or stored in glass containers ... [Pg.472]

The limestone (CaCOs) in the charge loses carbon dioxide, or calcines, in the hot furnace and combines with silica and other impurities to form slag, which is mostly molten calcium silicate, CaSiOs,... [Pg.1009]

The anticaking agent added to Morton salt is calcium silicate (CaSiOs). This compound can absorb up to 2.5 times its mass of water and still remain a free-flowing powder. Calculate the percent composition of CaSiO. ... [Pg.101]

There have been publications [14] on the antiwetting additive wollastonite (calcium silicate, CaSiOs). Wollastonite is not wetted by Al and might be a good refractory for Al. Unfortunately, at 1125 °C, p-wollatonite transforms into a-wollastonite with a big volume effect. The temperature of the phase transformation is a temperature of safe application as a refractory material. It is too low for using wollastonite-based material for furnaces however, it is used in the runners, where the temperature cannot be too high. As a compound of refractory mixes, it transforms into anorthite. [Pg.216]

Concentrated hydrofluoric acid reacts with glass, which can be considered to be a mixture of Si02 and ionic sihcates such as calcium silicate, CaSiOs ... [Pg.641]

Self-Test L.2B Carbon dioxide can be removed from power plant exhaust gases by combining it with an aqueous slurry of calcium silicate 2 C02(g) + H,0(l) + CaSiOds) — Si02(s) + Ca(HC03)2(aq). What mass of CaSiO, (having molar mass 116.17 g-mol ) is needed to react completely with 0.300 kg of carbon dioxide ... [Pg.111]

Remembering that slaked lime will decompose sodium silicate, producing caustic soda and calcium silicate, in accordance with the following equation — NajSiOs + Ca(OH)j = 2NaOH + CaSiO, ... [Pg.54]

CAS 13983-17-0. CaSiO,. A natural calcium silicate found in metamorphic rocks. [Pg.1331]

Calcium silicate (1888) (wollastonite) n. CaSiOs. A naturally occurring mineral found in metamorphic rocks, used as a reinforcing filler in low-density polyethylene, polyester, and other thermosetting molding compounds. It imparts smooth molded surfaces and low water absorption. [Pg.148]

Calcium silicate, natural n. CaSiOs. It has white color and acicular particles. It is characterized by high flatting action, combined with low oil absorption, and is used as an extender in paints, ceramics and plastics. Density, 2.9g/cm (24.2lb/gal) O.A., 25—30 particle size, 7 pm (fine particle grade) hardness (moh), 4.5. Syn wollastonite and calcium metasilicate. [Pg.148]

The slag is a glassy silicate mixture of complex composition, idealized as calcium metasilicate, CaSiO., in the above equation. [Pg.625]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...