Sorting of coal专利检索- .用添加剂专利检索查询-专利查询网

Sorting of coal
申请号	JP31397988	申请日	1988-12-14	公开(公告)号	JPH01201395A	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 light hydrocarbons (c) having a boiling point of ≤70°C, (such as n-hexane) in 2 to 50 wt.% of the (a) component, one or more nonionic additives (d) in 0.02 to 1 wt.% of the (a) component, which is selected from oil-soluble propoxylated-phenolic compounds and alkylphenolic compounds, (such as cresol) 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 and the residual products of petroleum refining, 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 lumpy material consisting mainly of pure coal and an aqueous dispersion mainly contg. the inorganic solid matter. COPYRIGHT: (C)1989,JPO
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