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Bleach clay residues utilization - from oil refining processes by stirring with hydrocarbons, alkanols and aq alkalis
Bleach clay residues utilization - from oil refining processes by stirring with hydrocarbons, alkanols and aq alkalis
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机译：漂白粘土残留物的利用-通过与碳氢化合物，链烷醇和碱水溶液一起搅拌进行炼油工艺而得
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摘要
1 part of the filter cake residue left from refining vegetable, animal or mineral oils with bleaching clays e.g. montmorillonite, is stirred with 0.25-0.70 parts hydrocarbon solvent (A) and 0.1-0.2 parts of a lower alkanol (B), and the slurry carefully stirred with an aq. alkaline soln. (C) so that a phase separation occurs. The liquid phase is removed and a solid phase of clay which is capable of swelling obtained. (A) is pref. white spirit, (B) is methanol and (C) is 5-15% soda soln. or a soln. of secondary or tertiary amine opt. contg. hydroxyl groups. Oil and solvent can be recovered from the liquid phase by evaporation. The clay obtained is suitable as a binder for mineral particles e.g. for mfr. of foundry moulds, pelletising of ores, production of road surfaces, and also for mixing with asphalt, bitumen, resins, etc. for water-proofing of buildings, mfr. of roofing papers, etc.
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