ferrous sulfate magnetite sulfate heptahydrate reaction iron Prior art date 2004-08-06 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Granted Application number CN 200410012473 Other languages Chinese (zh)
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The subject matter of the present invention relates to the production of a solution of ferrous sulphate, in aqueous acid medium the raw material being the ash obtained in the production of sulphuric acid by means of roasting of pyrites. The iron sulphate solution is reduced to convert all the ions to the ferrous form, using scrap iron.
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The invention relates to a method for producing ferrous sulphate monohydrate, which belongs to the field of chemical industry. The technical problem solved in the invention is to provide the method for producing the ferrous sulphate monohydrate, and the purity of the ferrous sulphate monohydrate produced by using the method can be more than 99 percent.
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Abstract. Ferrous sulphate BP, FeSO4,7H2O, dehydrates to form FeSO4,4H2O when the relative humidity (RH) is less than 65%, or on heating at 40 degrees C. The tetrahydrate was also prepared by recrystallization at 60 degrees C from aqeuous solutions of the sulphate. Commercial dried ferrous sulphate BP is FeSO4,H2O but the method of preparation
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SBM gives itself over to the production of crushers and mills used in aggregate crushing, industrial milling and ore processing fields, such as sand making machine, portable crusher plant, vibrating screen and raymond mill.
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Ferrous sulphate, a waste product in titanium white production at the Chemical Plant, was subjected to microbiological oxidation with Thiobacillus ferrooxidans bacteria. Ferrous sulfate is sometimes added to the cooling water flowing through the brass tubes of a turbine condenser.
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The subject matter of the present invention relates to the production of a solution of ferrous sulphate, in aqueous acid medium the raw material being the ash obtained in the production of sulphuric acid by means of roasting of pyrites. The iron sulphate solution is reduced to convert all the ions to the ferrous form, using scrap iron.
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What is claimed is: 1. A method of producing ferrous sulfate heptahydrate from ferrous sulfate monohydrate, comprising the steps of: reacting a pickling solution containing ferrous chloride (FeCl 2), hydrochloric acid (HCl) and water (H 2 O) in a precipitating reactor with excess of sulfuric acid (H 2 SO 4) to form ferrous sulfate monohydrate (FeSO 4) and hydrochloric acid; separating the
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Accordingly, and as will be apparent from the foregoing, there is provided in accordance herewith, a method for producing pure ferrous sulfate monohydrate directly from the reaction of iron and sulfuric acid in the absence of any production of the undesirable intermediate ferrous sulfate heptahydrate.
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CN-106265731-A chemical patent summary.
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Preparation method of iron oxide. The ferrous sulphate is then oxidized by air toiron oxide red to deposit, thus circulating to the end of the process to produce iron oxide red. 2, Dry method Nitric acid reacts with the iron scrap to form ferrous nitrate, cooling, crystallizing, dehydrating, grinding and calcining at 600-700 DEG C for 8-10 hours, and obtaining iron oxide red
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In a method of producing ferrous sulfate heptahydrate, ferrous sulfate monohydrate is converted in a crystallization reactor in the presence of water into ferrous sulfate heptahydrate as crystallized product, and water is subsequently isolated from the ferrous sulfate heptahydrate.
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We investigated the iron bioavailability of microencapsulated ferrous sulfate in a diet based on powdered milk by using the prophylactic method in rats.The SFE-171 was added into fluid milk and industrially processed into powdered milk, which was then mixed in our laboratory with a normalized diet (17.2 +/- 2.1 mg Fe/kg).
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ferrous sulfate magnetite sulfate heptahydrate reaction iron Prior art date 2004-08-06 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Granted Application number CN 200410012473 Other languages Chinese (zh)
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Abstract. Ferrous sulphate BP, FeSO4,7H2O, dehydrates to form FeSO4,4H2O when the relative humidity (RH) is less than 65%, or on heating at 40 degrees C. The tetrahydrate was also prepared by recrystallization at 60 degrees C from aqeuous solutions of the sulphate. Commercial dried ferrous sulphate BP is FeSO4,H2O but the method of preparation
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CN-106265731-A chemical patent summary.
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SBM gives itself over to the production of crushers and mills used in aggregate crushing, industrial milling and ore processing fields, such as sand making machine, portable crusher plant, vibrating screen and raymond mill.
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Dosimetry is an extensive and complicated subject but only one specific method will be given here. Of the dosimeters that are available the best known and most widely used is the ferrous:ferric sulphate system first described by Fricke and Morse, and subsequently developed (35).
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SBM gives itself over to the production of crushers and mills used in aggregate crushing, industrial milling and ore processing fields, such as sand making machine, portable crusher plant, vibrating screen and raymond mill.
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ferrous sulfate magnetite sulfate heptahydrate reaction iron Prior art date 2004-08-06 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Granted Application number CN 200410012473 Other languages Chinese (zh)
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Production of iron oxide 1945-04-24 2333672 Process of producing alkaline sulphates from ferrous sulphate 1943-11-09 2218117 Manufacture of ammonium Get price Fabrication of Ferrous Sulfate from Waste Like Condensed Milk …
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Ferrous sulphate, a waste product in titanium white production at the Chemical Plant, was subjected to microbiological oxidation with Thiobacillus ferrooxidans bacteria. Ferrous sulfate is sometimes added to the cooling water flowing through the brass tubes of a turbine condenser.
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1. A method of producing ferrous sulfate heptahydrate from ferrous sulfate monohydrate, comprising the steps of: reacting a pickling solution containing ferrous chloride (FeCl2), hydrochloric acid (HCl) and water (H2O) in a precipitating reactor with excess of sulfuric acid (H2SO4) to form ferrous sulfate monohydrate (FeSO4) and hydrochloric acid;
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SBM gives itself over to the production of crushers and mills used in aggregate crushing, industrial milling and ore processing fields, such as sand making machine, portable crusher plant, vibrating screen and raymond mill.
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The invention relates to a method for producing ferrous sulphate monohydrate, which belongs to the field of chemical industry. The technical problem solved in the invention is to provide the method for producing the ferrous sulphate monohydrate, and the purity of the ferrous sulphate monohydrate produced by using the method can be more than 99 percent.
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A method of producing ferrous sulfate heptahydrate from ferrous sulfate monohydrate, comprising the steps of: reacting a pickling solution containing ferrous chloride (FeCl2), hydrochloric acid (HCl) and water (H2O) in a precipitating reactor with excess of sulfuric acid (H2SO4) to form ferrous sulfate monohydrate (FeSO4) and hydrochloric acid;
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In a method of producing ferrous sulfate heptahydrate, ferrous sulfate monohydrate is converted in a crystallization reactor in the presence of water into ferrous sulfate heptahydrate as crystallized product, and water is subsequently isolated from the ferrous sulfate heptahydrate.
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Accordingly, and as will be apparent from the foregoing, there is provided in accordance herewith, a method for producing pure ferrous sulfate monohydrate directly from the reaction of iron and sulfuric acid in the absence of any production of the undesirable intermediate ferrous sulfate heptahydrate.
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We investigated the iron bioavailability of microencapsulated ferrous sulfate in a diet based on powdered milk by using the prophylactic method in rats.The SFE-171 was added into fluid milk and industrially processed into powdered milk, which was then mixed in our laboratory with a normalized diet (17.2 +/- 2.1 mg Fe/kg).
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Preparation method of iron oxide. The ferrous sulphate is then oxidized by air toiron oxide red to deposit, thus circulating to the end of the process to produce iron oxide red. 2, Dry method Nitric acid reacts with the iron scrap to form ferrous nitrate, cooling, crystallizing, dehydrating, grinding and calcining at 600-700 DEG C for 8-10 hours, and obtaining iron oxide red
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