Clinker consists of various calcium silicates including alite and belite. Tricalcium aluminate and calcium aluminoferrite are other common components. These components are often generated in situ by heating various clays and limestone. Portland cement clinker is made by heating a homogeneous mixture of raw materials in a rotary kiln at high temperature. The products of the chemical reaction aggregate together at their sintering temperature, about 1,450 C (2,640 F). Aluminum oxide and iron oxide are present only as a flux to reduce the sintering temperature and contribute little to the cement strength. For special cements, such as low heat (LH) and sulfate resistant (SR) types, it is necessary to limit the amount of tricalcium aluminate formed. The major raw material for the clinker-making is usually limestone mixed with a second material containing clay as source of alumino-silicate. Normally, an impure limestone which contains clay or silicon dioxide (SiO2) is used. The calcium carbonate (CaCO3) content of these limestones can be as low as 80%. Second raw materials (materials in the rawmix other than limestone) depend on the purity of the limestone. Some of the second raw materials used are: clay, shale, sand, iron ore, bauxite, fly ash and slag. The clinker surface and its reactions in different electrolytic solutions are investigated by scanning electron microscope and atomic force microscopy. Portland cement clinker is ground to a fine powder and used as the binder in many cement products. A little gypsum is sometimes added. It may also be combined with other active ingredients or chemical admixtures to produce other types of cement including: ground granulated blast furnace slag cement.
Urea, also known as carbamide, is an organic compound with chemical formula CO(NH2)2. This amide has two NH2 groups joined by a carbonyl (C=O) functional group. Urea serves an important role in the metabolism of nitrogen-containing compounds by animals and is the main nitrogen-containing substance in the urine of mammals. It is a colorless, odorless solid, highly soluble in water, and practically non-toxic (LD50 is 15 g/kg for rats).[5] Dissolved in water, it is neither acidic nor alkaline. The body uses it in many processes, most notably nitrogen excretion. The liver forms it by combining two ammonia molecules (NH3) with a carbon dioxide (CO2) molecule in the urea cycle. Urea is widely used in fertilizers as a source of nitrogen and is an important raw material for the chemical industry. Urea is used to treat dry/rough skin conditions (e.g., eczema, psoriasis, corns, callus) and some nail problems (e.g., ingrown nails). It may also be used to help remove dead tissue in some wounds to help wound healing. Urea is known as a keratolytic. Urea is an inexpensive form of nitrogen fertilizer with an NPK (nitrogen-phosphorus-potassium) ratio of 46-0-0. Although urea is naturally produced in humans and animals, synthetic urea is manufactured with anhydrous ammonia. Although urea often offers gardeners the most nitrogen for the lowest price on the market, special steps must be taken when applying urea to the soil to prevent the loss of nitrogen through a chemical reaction. Nitrogen Content Wt % : Min 46 Biuret Content Wt % : Max 1.0 Moisture Wt% : Max 0.3 Particle Size (1-2.4mm) % :Min 90 Or 2-4 Mm Granular Urea Urea Formaldhide (UF) % : Max 0.4 Packing : 50 Kg Bags / Bulk Urea
.Trader and shipping agents
Shipping container.Shipping agent, custom clearance and transportation
Bentonite , pvd salt , industrial salt , white cement , gypsum powder , marble chips , pebbles , marble powder , barite.Wholesale , exporter
Gum Arabic is a rich source of dietary fibers and in addition to its widespread use in food and pharmaceutical industries as a safe thickener, emulsifier, and stabilizer
Hydrocarbon Oils are one of the best sources for the fuel and for running the heavy and giant industrial machineries. These hydrocarbon oils have been manufactured at our company in a very excellent manner which have been processed and prepared for use in a full procedural manner. Our company is not only manufacturing these premium quality hydrocarbon oils but also are efficiently engaged in its supply, export, wholesale and trade widely in several regions of the country and abroad. Features: Excellent material quality Pure and adulteration free Easily affordable prices Superb efficiency
Limestone, nylon mono netting and lines.Sourcing
.Air freight, sea freight, overland trucking, customs brokerage services and other logistics related services
