REDUCING AGENT FOR THE SOLUBLE CHROMATE CONTENT OF CEMENT AND METHODS FOR THE PRODUCTION THEREOF

Producing reducing agent containing iron(II) sulfate comprises concentrating spent sulfuric acid and separating the sulfuric acid from the resulting precipitate. Independent claims are also included for: (a) reducing agent produced as above; (b) composition comprising cement, water-soluble metal sul...

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Bibliographische Detailangaben
Hauptverfasser:	KLEIN Detlef, BAHL Werner, VOSSING Michael, AUER Gerhard, LAUBACH Benno, KOLLISCH Klaus, REESE Philip, SCHUY Werner, WEISS Erwin
Format:	Patent
Sprache:	eng ; slv
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F COMPOUNDS THEREOF CONCRETE FERROUS OR NON-FERROUS ALLOYS INORGANIC CHEMISTRY LIME, MAGNESIA METALLURGY NON-METALLIC ELEMENTS PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS REFRACTORIES SLAG TREATMENT OF ALLOYS OR NON-FERROUS METALS TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	Producing reducing agent containing iron(II) sulfate comprises concentrating spent sulfuric acid and separating the sulfuric acid from the resulting precipitate. Independent claims are also included for: (a) reducing agent produced as above; (b) composition comprising cement, water-soluble metal sulfates and optionally water, containing 0.01-5 weight % of a reducing agent as above.