... calcium sulfate hemihydrate (CaSO4.1 / 2H2O) and tricalcium phosphate alpha (a-Ca3 (PO4) 2). To improve its properties, other ingredients such as sulfates ...

heating and calcining the crushed calcium sulfate dihydrate (CaSO4 2H2O) to produce calcium sulfate hemihydrate (CaSO4 1/2 H2O), the calcium sulfate hemihydrate ...

... CaSO4, 1 / 2H2O into CaSO4, 2H2O ... calcium chloride (CaCl 2) and calcium sulphate (CaS0 4). Thus the preparation according to the invention is ...

The suspension of needle-shaped (acicular) calcium sulfate dehydrate particles is prepared by mixing freshly calcined calcium sulfate hemihydrate (CaSO4~1/2H2O) ...

2. A method according to claim 1, characterized in that, in order to increase the sorption activity of the target product with respect to fluorine, ...

2. according to claim 1 is the calcium sulphate crystal whisker preparation method of raw material with the sea water bittern, it is characterized in that ...

2. A process according to claim 1 in which the calcium carbonate is crushed limestone having a particle size between 10 microns and 40 microns.

% of the urea in the granule is comprised in the calcium sulfate urea adduct. Embodiment 3 is the UCS fertilizer granule of any one of Embodiments 1 to 2, ...

The addition of reaction (ii) provides one of the methods according to the invention, to obtain calcium thiosulfate from sulfur dioxide and lime-sulfur (a ...

1/2H 2 O); and, an anhydrite (CaSO 4). Additionally, the anhydrite and the hemi-hydrate exist in at least two different forms, based on different degrees of ...

In effecting the calcium sulfate compound precipitation in accordance with the invention, this compound occurs as calcium sulfate hemihydrate (CaSO4..1/2H2O), ...

... calcium sulfate hemihydrate (CaSO4•1/2H2O) [alpha-type] compound are disclosed, at least one method including forming calcium sulfate dihydrate (CaSO4.2H2O) ...

2. The method according to claim 1, characterized in that g e k e n n -z e i c h n e t, that calcium sulfate ...

CaSO4.1/2H2O, 5-45% (I) and 0.3-2 (0.5-2)% cellulose deriv. and esp. also a water- ...

The resulting product at the end of the oxidation reaction step is the desired calcium thiosulfate product with a 2:1 sulfur-to-calcium ratio and very little ...

High purity calcium ~ulfate and hydrated forms of calcium sulfate, including CaSO4 2H20 ... 1/2H2O; CaSO4?2H2O; 2CaSO4?MgSO4?K2SO4?2H2O; 3CaO?Al2O3?3CaSO4?32H2O; ...

-In one particular aspect the present invention provides a method for producing insoluble calcium sulfate anhydrite ~, . . . characterized in undergoing about ...

... CaSO4, 1/2H2O into CaSO4, 2H2O ... water abstract 2 0.000. solidification abstract 1 0.000. solidification abstract 1 0.000. Show all concepts from ...

Is 10 o'clock at 20 ℃ with pH, for example, and K=10 10Dm 3Mol -1Be Ca 2+Come down to irreversible with combining of EDTA. Therefore, when calcium sulfate and ...

... one or more of: Si2F6; Na2SiF6; K2SiF6; CaSiF6/2 H20; CaF2; MgF2; CaSO4/2 H20; MgSiF6/6 H20; Mgo.8Ah.5F6/X H2O (wherein X is an integer ranging from 2 to 20);