Patent ID: 9636657
Date: 2017-05-02
CPC Classifications: A23D,B01J,C04B

Claim:
1. A hydraulically set oil-permeable article comprising, a cement body enclosed in a package that resists ingress of water or water vapor, wherein the cement body is a block or briquette for preserving cooking oil during deep fat frying, said cement body consisting of: greater than 50 wt % of a mixture of milled white ordinary Portland cement (OPC) clinker and white ordinary Portland cement in which the milled white OPC clinker is present in an amount of less than or equal to 15 wt % of the mixture, having no free water for resisting damage on immersion in cooking oil and initial heating, optionally further consisting of silica 1-2 wt % and/or titanium dioxide 1-2 wt % and optionally further consisting of ingredients selected from calcium silicate, magnesium silicate, aluminium silicate, natural feldspars, natural sodium zeolites, natural calcium zeolites, synthetic sodium zeolites, synthetic calcium zeolites, wollastonite, calcium hydroxide, clays, pillared clays, activated clays/earths, talcs/kaolinite, amphiboles, granite porphyry, rhyolite, agahnatolite, porphyry, attapulgite and diatomaceous earth; and wherein the cement body is porous so that oil can diffuse into it and contaminants can be deposited on and within it.