1. Carbon additivemeaning
Carbon additive steelmaking with an additive, it is essential for the production of high quality steel material, the electrode is the production of raw materials. The coal Carbon additive, casting production can greatly increase the amount of scrap and reduce the amount of pig iron or no iron, in smelting furnace, Carbon additiveagent in the middle, furnace put part of the material after put carbon additive) added measure of the amount of metal 1-3%.
http://activatedcarbon2.com/?p=34
Calcined coal Carbon additive is in Ningxia anthracite as the basis of Carbon additive agent, is widely used in the major steel mills and foundries, coal based carbon agent referred to as "calcined coal" general fixed carbon in about 90%-95.5%, sulfur copies around 0.2-0.3, washed anthracite coal drying at room temperature, in the calcining furnace according to the heating curve of the temperature to 1300 degrees place for self - contained volatile, released crushing and screening.
2.Carbon additive product characteristics
(1) pure chemical composition: carbon, sulfur, nitrogen, less harmful impurities
(2) physical form: the appearance is clean, no impurities, multi pore structure, absorption rate is fast, the absorption rate is high
(3) microscopic morphology: the quality of the crystal is excellent, and the quality and performance of the castings are effectively improved.
(4) the product quality is stable: carbon stable effect, good absorption effect, temperature effect, do not return slag
3.Using the method of carbon additiveproducts
1, use more than 5 tons of furnace, simple and stable raw material, we recommend adding a dispersion method. According to carbon content according to mixture ratio, carbon additiveand the charge of metal with the batch join the middle lower part of the furnace. Carbon additivein melting do not hit slag, otherwise easy to wrap in the waste residue and the influence of carbon absorption.
