Composite coal binder for lime vertical kiln

Abstract

The invention discloses a composite coal bonder for lime vertical kiln, which is used for producing coal of lime vertical kiln cold molded by hard coal powder or breeze. Components of the bonder and weight percent thereof is: 25-35% of curing agent, 5-10% of activator, 6-12% of biomass fibre, 0.5-1.5% of surfactant, 50-60% of thermal bonder. The bonder used for producing coal has advantage of simple technology, low cost, coal indexes of compressing strength in state of thermal and cold, dropping strength, thermal stability, caloricity, volatile constituent, ash fusion point, cokability are satisfied producing requires of the lime vertical kiln and with good waterproofness.

Description

technical field [0001] The invention relates to an industrial molded coal binder, in particular to a composite molded coal binder for lime shaft kilns. Background technique [0002] The industrial production of lime often adopts mechanical mixing type lime shaft kiln. Due to the height of the kiln, the feed drop of the fuel mixed with the limestone is large, and the fuel must have good cold performance, especially the anti-drop performance; when the fuel goes forward in the vertical kiln, it not only has to withstand the impact of the air flow and the high pressure generated by the gravity of the material, but also To withstand the high temperature above 1000℃, the thermal performance of the fuel is required to be good enough; in order not to reduce the quality of calcined lime, the calorific value of the fuel should not be too low, the ash content should not be too high, and at the same time, the fuel contains Fe, Al, Si, etc. The oxide content of elements should be as low...

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Problems solved by technology

目前,我国已公布了CN1149617、CN86101384、CN86108971、CN1036032、CN1036032、CN1036982、CN1050735、CN1057069、CN1188141、CN1110297,CN1106452、CN1104、CN1080316、CN1057065、CN1204685、CN1252429、CN1314454、CN1320670、CN1330137、CN1345918、CN1772854、CN1563295等 Coal briquette binder patents, but the briquettes produced by using these binders, or in the cold strength and hot strength of the briquettes, or in the calorific value and ash content of the briquettes, or in containing more Hazardous substances that reduce lime activity, or have their own deficiencies in the ash melting point and coking performance of briquettes, making it difficult to meet the fuel requirements of mechanical mixing lime shaft kilns