Calcium carbonate suspension

Figure 5.3. Effect of concentration on the sedimentation of calcium carbonate suspensions...

Tiongson A. Process of making an aqueous calcium carbonate suspension. International Patent WO 9945937 1999. 

Calcium carbonate suspension. Mix 1 g of CaC03 with 100 ml of water. 

A. Oral. Calcium carbonate suspension, tablets, or chewable tablets 300-800 mg. 

Synonyms kalsomine hydrated lime suspension calcium carbonate suspension. 

The absorption of valproate was slightly, but not significantly, increased by an aluminium/magnesium hydroxide suspension but not by magnesium trisilicate or a calcium carbonate suspension. 

H.H. Xu, D.S. Keller, Shear thickening behavior of concentrated calcium carbonate suspensions, June 16-19, 2003 Montreal, QC, Canada, p. 275-80. 

This macromolecular reagent is also a good choice against the oxidation of nitrites when using homogenous oxidant. In the reactive copolymer column process the diluted nitrite ion gets in contaet with high coneentration of oxidant (4.10 mmol of active chlorine/g of copolymer) and that is why the oxidation reaction runs fast to completeness. The postreaction solution may be used in a mineral fertilizer production or it can be applied directly as a nutritive spray for farmlands. Neutralization with ammonia or lime-water or calcium carbonate suspension is recommended. 

Uses Dispersant, corrosion and scaie inhibitor for cooling tower, boiler treatmenL oil field applies. soil and calcium carbonate suspension hard surf, cleaning Diammonium cocoyl sulfosuccinate... 

Preparation of palladium - calcium carbonate catalyst. Prepare 60 g. of precipitated calcium carbonate by mixing hot solutions of the appropriate quantities of A.R. calcium chloride and A.R. sodium carbonate. Suspend the calcium carbonate in water and add a solution containing 1 g. of palladium chloride. Warm the suspension until all the palladium is precipitated as the hydroxide upon the calcium carbonate, i.e., until the supernatant liquid is colourless. Wash several times with... 

Precipitated Calcium Carbonate. Calcium carbonate [471-34-1] (Turns), CaCO, is a fine white microcrystaUine powder without odor or taste. It is stable in air. An aqueous suspension is close to neutrality. It is practically insoluble in water, insoluble in alcohol, and dissolves with effervescence in dilute acetic, hydrochloric, and nitric acids (see Calcium compounds, calcium carbonate). 

Tyj)e of dryer Applicable with dry-product recirculation True and colloidal solutions emulsions. Examples inorganic salt solutions, extracts, milk, blood, waste liquors, rubber latex, etc. Pumpable suspensions. Examples pigment slurries, soap and detergents, calcium carbonate, bentonite, clay sbp, lead concentrates, etc. does not dust. Recirculation of product may prevent sticking Examples filter-press cakes, sedimentation sludges, centrifuged sobds, starch, etc. 

In other parts of the world, plywood adhesive fillers are obtained from local sources and may be quite different than those used in North America. In Southeast Asia, banana flour is quite important. In Europe, calcium carbonate (chalk) is often used. Nearly any fibrous material or fine particulate material capable of forming a functionally stable suspension can be made to work if the formulator is sufficiently skillful. However, the mix formulator will be very specific about the type and grade of filler to be used in a particular mix. Substitutions may lead to serious gluing problems. 

During the filtration test of a water suspension containing 14.5 % calcium carbonate in a filter press (A = 0.1 m 50 mrn cake thickness temperature 23 C), the following data were obtained ... 

Calcium carbonate is manufactured by bubbling carbon dioxide through milk of lime suspension in a carbonator , according to... 

This material was made up with distilled water to provide 41 g per liter, and the mixture was adjusted to pH 7.0 with potassium hydroxide solution. To the mixture were added per liter 5.0 g of calcium carbonate and 7.5 ml of soybean oil. 2,000 ml portions of this medium were then added to fermentation vessels, equipped with stirrers and aeration spargers, and sterilized at 121°C for 60 minutes. After cooling the flasks were inoculated with a suspension of strain No. ATCC 11924 of Streptomyces lavendulae, obtained from the surface of agar slants. The flasks were stirred for 4 days at 28°C at approximately 1,700 rpm. At the end of this period the broth was found to contain cycloserine in the amount of about 250 C.D.U./ml of broth. The mycelium was separated from the broth by filtration. The broth had a pH of about 7.5. Tests showed it to be highly active against a variety of microorganisms. 

The product, calcium hydroxide, is commonly known as slaked lime because, as calcium hydroxide, the thirst of lime for water has been quenched (slaked). Slaked lime is the form in which lime is normally sold because quicklime can set fire to moist wood and paper. In fact, the wooden boats that were once used to transport quicklime sometimes caught fire in the heat of reaction when water seeped into their holds. An aqueous solution of calcium hydroxide, which is slightly soluble in water, is called lime water. It is used as a test for carbon dioxide, with which it reacts to form a suspension of the much less soluble calcium carbonate ... 

Many metal hydroxides are insoluble. For example, when MgO is made into a slurry, the white suspension is known as milk of magnesia. Calcium oxide (lime) is produced by heating limestone (calcium carbonate) at high temperature. 

C. [18]Annulene. In a 300-ml. conical flask fitted with a side arm (with a closed stopcock) and a 3.5-cm. Teflon -coated magnetic stirring bar is placed 1 g. of a 10% palladium-calcium carbonate catalyst (Note 20) and 30 ml. of benzene (Note 10). The flask is attached to an atmospheric pressure hydrogenation apparatus, and the air in the system is replaced by hydrogen by evacuating the flask and refilling with hydrogen three times. The catalyst suspension is stirred until no more gas is absorbed. One-third (390 mg., determined spectroscopically)... 

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