2016年3月27日星期日

Introduction on Main Application of Anthracite




Anthracite, generally known as white coal or smokeless coal, is the coal of maximum degree coalification. Its coal content material reaches high to 90 to 98 percent, whilst hydrogen content is generally less than 4 %. It has many characteristics like low volatiles, higher strong coal, higher hardness, difficult abrasion, higher fire point, shot flame, weak chemical reaction, non-cohesiveness, no thickness of colloidal layer and non-smoking when burning. The caloric value is approximately 6000 to 6500 kcal per kg. Occasionally, from the viewpoint of Anthracite Supplier, they contact anthracite of fantastic volatile content material semi-anthracite and that of small high anthracite.
Anthracite is used in synthesis ammonia manufacture as gas creating raw material and nitrogenous fertilizer production. With properties of low ash, low sulfur and great abrasiveness, anthracite can not only be utilized as fuel for blowing and sintering iron ore in blast furnace but, especially for Calcined Anthracite as raw material for manufacturing various carbon supplies like carbon electrode, anode paste and activated coal. Some of excellent quality may be manufactured into briquette coal for aviation use for the purpose of thermal insulation for plane engine and car motor.
In detail, anthracite has following applications as beneath.
Firstly, chemical material. Anthracite is the essential raw material for synthesizing ammonia and creating nitrogenous fertilizer and urea. Those of low ash and low sulfur can nonetheless be utilized to manufacture graphite as New Graphite Material. Of course, other than graphite, this sort of anthracite also has wide application in producing calcium carbide, carbon electrode, silicon carbide, carbon fiber and some others.
Secondly, blast furnace injection coal. Using the daily enlargement of steel productivity and constant development and perfection of critical technology in blast furnace coal injection, blast furnace coal injection is playing a more and more important function in saving smelting cost in steel business. Anthracite becomes the best option within this application for very high carbon content. To make use of anthracite, some within the form as Anthracite Ball as the partial replacement of metallurgical coke, on one hand, decreases pig iron price by lowering iron and coke ratio, and on anther, saves coking investment by developing much less coke oven. Therefore, it decreases air pollution caused by coking at the same time of significantly relieving the intensive situation of coking coal resource.
Thirdly, electricity generation fuel. Anthracite has currently turn out to be excellent fuel in electrical energy generation for the traits of higher heat and non-smoke in burning. Nevertheless, just as Coal Supplier indicates, it is still not extensively applied only for the reason of relatively high cost. But with daily strengthened atmosphere protection force, a batch of energy plants fueled by anthracite, merger lean coal or perhaps the blender are put into production in succession. Anthracite is certainly to become further popularized as electrical energy generation fuel.

没有评论:

发表评论