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91. 发明专利

JPH09110572A SUSTAINED RELEASE FERTILIZER FOR CULTURING SEA ALGA 失效
公开(公告)号：JPH09110572A
公开(公告)日：1997-04-28
申请号：JP27140895
申请日：1995-10-19
申请人： MITSUI TOATSU CHEMICALS
发明人： TAKENAGA MOTOI , HATSUDA NOBORU
IPC分类号： A01G33/02 , C05B13/06 , C05B17/00 , C05G3/00
摘要： PROBLEM TO BE SOLVED: To obtain a sustained release fertilizer safe to the environment, containing, as active ingredient, ammonium polyphosphate having specific granular size. SOLUTION: This fertilizer contains, as active ingredient, ammonium polyphosphate >=70wt.% of which is >=100-mesh in granular size, -1×10 in molecular weight. This ammonium polyphosphate fertilizer sealed in nonwoven fabric bags is allowed to dissolve in seawater directly and then adhere to the surface of sea algae, and is gradually hydrolyzed to effect feeding the sea algae with both nitrogen and phosphorus elements in the fertilizer as nutrients.

95. 发明专利

JPH06122584A GLASS FERTILIZER AND GLASS FERTILIZER SOIL 失效
公开(公告)号：JPH06122584A
公开(公告)日：1994-05-06
申请号：JP29826392
申请日：1992-10-12
申请人： TOYO GLASS CO LTD
发明人： OGATA HARUHIKO , YOSHIDA MITSUO
IPC分类号： C05D11/00 , C05B17/00 , C05G3/00
摘要： PURPOSE:To make a fertilizer disperse into the whole root of a plant and improve the absorption efficiency of the fertilizer by ensuring the reliability for fertilizer effects without changing the elution of the fertilizer with time in a slow-acting fertilizer. CONSTITUTION:This glass fertilizer consists essentially of 20-80wt.% SiO2, 15-60wt.% K2O and 55-30wt.% P2O and composed of 0-20wt.% part or all of the group consisting of N2, MgO, CaO, Na2O, Fe2O3, ZnO, MnO and CuO as minor elements. Furthermore, the glass fertilizer soil comprises this glass fertilizer at 3-40 weight ratio and clay at 100 weight ratio.

96. 发明专利

JPH05201784A PRODUCTION OF PHOSPHORIC ACID FERTILIZER 失效
公开(公告)号：JPH05201784A
公开(公告)日：1993-08-10
申请号：JP3570092
申请日：1992-01-27
申请人： JAPAN METALS & CHEM CO LTD
发明人： NISHIMOTO AKIRA , ICHIKAWA KANTA , ICHIJO TOSHIJI
IPC分类号： C05B17/00 , C05B19/00 , C05G1/00
摘要： PURPOSE:To increase the content of phosphoric acid by mixing the phosphoric acid with the water granulated ore slag which is by-produced at the time of producing low-carbon ferrochromium and bringing the mixture into reaction. CONSTITUTION:The low-carbon ferrochromium ore slag having a compsn. contg. 27 to 28wt.% (hereafter %) SiO2, 46 to 49% CaO, 9 to 11% MgO and >=60% alkaline component (CaO+MgO) and having 2.2 to 2.4 basicity (CaO+MgO/SiO2) is by-produced at the time of producing the low-carbon ferrochromium. This ore slag is put into a molten state and is water-granulated by blowing compressed air and jet water liquid thereto. The prescribed volume of the phosphoric acid liquid is sprayed and mixed at one time to and with this water granulated slag or a mixture composed of this water granulated slag and fine pulverized weathered slag or is dividedly twice sprayed and mixed to and with the slag to effect the reaction. The moisture is evaporated by the reaction heat and the formed reaction product of a low moisture content is dried by hot wind, by which the phosphoric acid fertilizer having >=25% phosphoric acid content is obtd.

97. 发明专利

JPH0384091A SOIL IMPROVER AND ITS PRODUCTION 失效
公开(公告)号：JPH0384091A
公开(公告)日：1991-04-09
申请号：JP22036389
申请日：1989-08-29
申请人： TAIYO KAGAKU KOGYO CO LTD
发明人： MATSUMOTO YOSHIO
IPC分类号： C09K17/00 , C05B15/00 , C05B17/00 , C05F11/04
摘要： PURPOSE:To obtain a soil improver effective in improving soil fertility, having light weight and easy of transportation and handling by mixing and stirring peat and a phosphorus-containing slag to effect hydration reaction, adding a mixed acid to the reaction product and granulating the mixture. CONSTITUTION:The objective soil improver can be produced by mixing and stirring peat having a water-content of >=40% and a phosphorus-containing slag to effect hydration reaction, adding a mixed acid composed of sulfuric acid and phosphoric acid to the reaction product to effect the reaction of a part of the hydrate and produce a sulfate and a phosphate, adding lignosulfonic acid salt and blackstrap molasses and granulating the mixture.

100. 发明专利

JPS6345120A RECOVERY OF CALCIUM FLUORIDE 失效
公开(公告)号：JPS6345120A
公开(公告)日：1988-02-26
申请号：JP18688986
申请日：1986-08-11
申请人： NIPPON KOKAN KK , KOKAN MINING CO LTD
发明人： SAITO HIROSHI , ARAKI SHIGERU , SATO KAZUYOSHI , KIMURA KATSUHIKO
IPC分类号： C05B5/00 , C01F7/50 , C05B17/00
摘要： PURPOSE:To recover high-purity CaF in high efficiency, by dissolving the components other than CaF in a CaF-containing powdery mineral in an acid and separating into solid and liquid. CONSTITUTION:Dephosphorization slag produced by the dephosphorization of molten pig with a lime-based flux is crushed and magnetizable materials are removed from the slag. The obtained CaF-containing powdery mineral is immersed in an acid solution having a concentration of 1-20wt% and capable of dissolving the components other than the CaF component at a solid/liquid ratio of 1:(100-20) to effect the dissolution of the components other than the CaF component. The solution is added with a cationic coagulant (e.g. polymethacrylate) at an amount of 2-20mg/l, heated at 30-60 deg.C and separated into solid and liquid.

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