Patent GB-146351-A (GB)
Title: Improved process for opening-up iron ore containing phosphates
IPC: C05B17/00
Filed: 1920-07-02
Abstract: Alkali-metal compounds, obtaining from complex silicates.  The Specification as open to inspection under Sect. 91 (3) (a) contains the following subject-matter:-Insoluble and difficulty soluble materials such as potassium silicates, aluminium and magnesium silicates, quartz, and feldspar are treated by the action of micro-organisms (bacteria, yeast-fungi, mould-fungi, &c.) to obtain the desired constituents in water-soluble form for use as manure, food for animals, medicines, or for the obtainment of chemical products.  The following substances are mentioned as suitable food for the micro-organisms-lignites, peat, humus, leaves, forest litter, bark, sawdust, alg , sea-weed, fungi, lichens, mosses, ferns, grasses, straw, rushes, chaff, fruit, potatoes, greens, turnips, beet, weeds, kitchen waste, garden waste, blood, hair, urine, dung, horn, bones, tanners waste, slaughterhouse waste, carcases of animals, and all organic matters suitable for fermentation.  The products may be used with absorbent materials.  In an example, bog iron ore is mixed with a paste of potatoes and water to which has been added a sufficient quantity of "ferments of the acid-producing group," the whole being raised to a fermentation temperature.  On filtering the product, a solution containing iron and phosphoric acid is obtained.  The substances used as food for the micro-organisms may be steamed or treated with acids or solutions of caustic alkalies. This subject-matter does not appear in the Specification as accepted.ALSO:Iron ore containing phosphates is mixed with suitable vegetable food for bacteria made into a paste with water, and with sour milk or liquor of sauerkraut, and the mixture is allowed to ferment. The iron and phosphoric acid are rendered soluble, and the whole mass may be used as a fertilizer &c., or it may be filtered to obtain a solution of iron phosphate.  The Specification as open to inspection under Sect. 91 (3) (a) includes also the following: Insoluble and difficulty soluble materials such as kieserite, carnallite potassium silicates, calcium carbonate, calcium phosphates (such as phosphorite and apatite), calcium sulphate, calcium silicate, magnesite, schonite, magnesium silicates, aluminium silicates, manganese spar, manganese slag, brown-stone, h matite, clay iron ore, bog iron ore, pyrites, ironstone spar, iron silicates, quartz, heavy-spar, alumina, feldspar, and compounds (for instance phosphorus compounds) contained in animal and vegetable bodies are treated by the action of micro-organisms (bacteria, yeast-fungi, mould-fungi, &c.) to obtain the desired constituents in water-soluble form for use as manure, food for animals, medicines, or for the obtainment of chemical products.  The following additional substances are mentioned as suitable food for the micro-organisms-lignite, peat, bark, sawdust, fruit, turnips, weeds, blood, hair, urine, dung, horn, bones, tanners waste, slaughterhouse waste, carcases of animals, and all organic matters suitable for fermentation.  The products may be used with absorbent materials.  In an example bog iron ore is mixed with a paste of potatoes and water to which has been added a sufficient quantity of "ferments of the acid-producing group," the whole being raised to a fermentation temperature.  On filtering the product, a solution containing iron and phosphoric acid is obtained. This subject-matter does not appear in the Specification as accepted.