Seize 50-80mm 295L Calcium Carbide

1. Integrated Steelmakers: (Low Cost, Powerful Desulfurizing)



Calcium carbide is a powerful and effective chemical reducing agent. Nowhere is this more evident than in the field of metallurgy, where it is added to liquid iron and steel through subsurface pneumatic powder injection in order to remove sulfur impurities prior to the final steelmaking process.

In modern steelmaking operations, the need for lower sulfur steels demanded by modern continuous casting operations and specialty applications has increased calcium carbide's appeal as a hot metal desulfurizer.



2.Electric Steel Making: Increased Efficiency



Among its many metallurgical uses, calcium carbide has been found by EAF shops to be an essential tool for the removal of unwanted iron oxide from furnace slag that is carried into the ladle during tapping. Left untreated, these oxides can interfere with the downstream steel refining operation by inhibiting desulfurization, oxidizing ("fading") alloy additions, and attacking refractories.



Although aluminum, ferrosilicon, silicon carbide, and even coke have also been used for this purpose, calcium carbide has proven to be more economical, more efficient, and more reproducible in its effects. This is due to the fact that unlike the other materials, calcium carbide produces CO gas which uniformly distributes and mixes the carbide while foaming the slag; does not require a balancing lime addition as do silicon-based additives (in fact every pound of carbide adds about one pound of lime); reacts exothermically (producing heat) to not chill the slag; and under typical conditions does not dissolve in steel producing practically no carbon pick-up, no unexpected deoxidation, and nearly 100% utilization.



For this application, Carbide Industries can provide the grade size of calcium carbide that best meets the requirements of a particular application. Standard sizes range from 0.5" x 0.25" (13 mm x 6.5 mm) to 10 x 40 US-mesh (2 mm x 0.4 mm). For increased ease of application, these grades are available in smaller 2 1/2 and 5 gallon containers, in addition to the conventional 55 gallon drums and 2.5 ton bulk flo-bin containers.



3.Ductile Iron And Steel Foundries:Direct Desulfurizing



Ductile iron is used to manufacture inground water and sewer pipe, and for certain automotive applications where a combination of high strength and toughness is required.



In ductile iron foundries, liquid iron must be desulfurized before specialized inoculation treatments can be employed to give the iron its ductile properties. This desulfurization is frequently performed by feeding granular forms of calcium carbide onto the surface of the liquid iron, which is contained in specially designed mixing units.

Because purity and particle size are the key parameters for optimum effectiveness in this application, particle sizing is carefully selected to provide maximum particle surface contact with the liquid iron without incurring excessive dust losses through atmospheric convection above the metal surface.

Carbide Industries manufactures three standard sized products for ductile iron desulfurization, generally within the range of 205mm to 0.2mm .In addition, two patented specialty products are available to meet specific customer requirements. These specialized products are formulated to help eliminate the retention of unreacted carbide in the resulting desulfurization slags and also to minimize slag odor.



4.Welding& Cutting Industries (Safety,Speed And High Temps)



Calcium carbide is converted into acetylene in a controlled reaction with water using an apparatus called a generator. Acetylene, C2H2, is an extremely useful hydrocarbon due to the energy that is locked up in the triple-bond between carbon and hydrogen atoms. This energy is then released and utilized in different ways by our customers for a variety of industrial purposes.



Among these many uses of acetylene gas, the largest and perhaps the most familiar is its use in the form of cylinder gas for metal fabrication and construction. When combined with oxygen in an oxyacetylene torch, acetylene produces a flame temperature in excess of 6,000F, the hottest flame of all hydrocarbon gases. This provides the means to cut or join many types of metal, cleanse them of surface imperfections, and strengthen them through flame hardening. In addition, acetylene is lighter than air and is therefore the safest fuel gas to use in confined spaces, below ground, or on ships.



5.Chemical Industry: The Classic Hydrocarbon Source



while calcium carbide is sometimes utilized directly as a process material, its major use and perhaps its greatest versatility is realized when the rock-like substance is reacted with water to produce acetylene. The unique chemistry of the triple-bonded carbon in the acetylene molecule allows for a variety of useful chemical reactions that form intermediates which are used in the manufacture of a diverse range of chemical derivatives.



6.For Our Environment: Cost Effective Treatment of Effluents



A co-product of the acetylene generation process, carbide lime (also known as hydrated lime or calcium hydroxide) is extremely useful in a variety of industrial applications.



Perhaps the most famous use of our calcium hydroxide is in the scrubbing of stack gases from fossil-fueled power plants to remove sulfur compounds before release to the air.



7.Soil Engineering: Applied Chemistry For Mass Benefit



A co-product of the acetylene generation process, carbide lime (also called hydrated lime or calcium hydroxide) is also useful in a variety of non-industrial applications.



Although some might consider this a subset of environmental engineering, there are some important uses of carbide lime that might not be readily apparent. For example, carbide lime is already in slurry form from the acetylene generation process, making it easily spreadable and sprayable over large tracts of land. In this way farmers use our carbide lime to neutralize the affects of acid rain, and mines use it to neutralize acidic water runoff. In the right amount, the fine size and reactivity of our carbide lime causes a chemical reaction with soil similar to the formation of concrete. This soil stabilization reaction is used in the road construction industry as it forms a very stable sub-roadbed surface for our roads and highways.