Sorting of coal |
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| 申请号 | JP31398088 | 申请日 | 1988-12-14 | 公开(公告)号 | JPH01201396A | 公开(公告)日 | 1989-08-14 |
| 申请人 | Eniricerche Spa; | 发明人 | ANTONIO BETSUTOORU; NETSURO PATSUSARIINI; ARUMANDO MARUKOTSUURIO; | ||||
| 摘要 | PURPOSE: To provide a method which enables the caking of coal normally difficult or unable to be caked, even at the time of performing its treatment using a light solvent, and also, enables improvement in selectivity and recovery property of the caking of coal by adding a specific caking mixture to a water-coal dispersion. CONSTITUTION: A ground coal material (a) is dispersed in water (b) to obtain a water- coal dispersion (A). On the other hand, one or more kinds of solvents (c) in 2 to 50 wt.% of the component (a), which is selected from light hydrocarbons each having a ≤70°C boiling point, (such as n-hexane), a nonionic oil-soluble additive (d) in 0.02 to 1 wt.% of the component (a) obtained by subjecting a phenolic fraction derived from coke-oven tar to controlled propoxylation and thereafter, if necessary, ethoxylating the propoxylated product and one or more heavy co-caking agents (e) in 0 to 3 wt.% of the component (a), which is selected from coal-derived oils each having a 200 to 400°C boiling point, the residual products of petroleum refining and mixtures thereof, are mixed to obtain a caking mixture (B); and then, the B component is added to the A component and mixed together, to obtain a caked or aggregated material consisting mainly of pure coal and an aqueous dispersion mainly contg. the inorganic solid matter. COPYRIGHT: (C)1989,JPO |
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