Title: Method for producing cinder of sulfur iron ore in high iron and low sulfur type
Application Number: 200410079527 Application Date: 2004.10.25
Publication Number: 1600878 Publication Date: 2005.03.30
Approval Pub. Date: Granted Pub. Date: 2005.11.23
International Classifi-cation: C22B1/02,B03D1/02,B03D1/004,B03D1/002
Applicant(s) Name: Yiming Xing Mine Metallargical Equipment Address: 650093
Inventor(s) Name:
Attorney & Agent: cheng yunbei
Abstract:
     This invention relates to the prodn. of pyrite cinder contg. low sulfur high iron utilizing pyrite as raw material which contains 8-48% sulfur. The production procedures are as follows: grinding, milling, floatation, concentration for 3-6 times, back-floatation for removing impurities to obtain high purity pyrite powder contg. pyrite more than 95%, then burning in oxygen-rich air in a fluidized bed furnace, the produced SO2 is proceeded dust-removing for 2-4 times, then used as raw material to produce sulfuric acid, and the main product-pyrite cinder contg. iron being more than 65% and sulfur being less than 0.4%. Said cinder can be used as raw material for directly producing reduced iron in a reduction iron prodn. furnace. Advantages is: comprehensive use of pyrite to obtain reduce iron and sulfuric acid.
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