Semi-coke is light black; characterized by high fixed carbon, high specific resistance, high chemical activity, low ash content, low sulfur and Low phosphorus. China Semi-coke is called "Lan coke"in Chinese, because of its blue flame when burning. Its has the similar construction with met coke, while the average price is only half the cost of met coke. Semi coke (gas coke) is made of high quality Jurassic coal briquettes which can be found in the ShenFu coalfield. As a new type of carbon material, it has attractive properties of high fixed carbon, high specific resistivity, high chemical activity , low ash content, low Aluminum, low sulphur, and low phosphorus. It has gradually replaced metallurgical coke anthracite and charcoal. As an irreplaceable carbon material, it has been widely used in producing Calcium Carbide, Silicon Metal, Ferroalloy, Silicon Iron, Silicomanganese, Carborundum, and so on. Moreover, it can also replace a fairly large number of anthracite and hard coke applications in the area of blast furnace injection, producing charring materials and activated carbon.