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1.发明授权
公开(公告)号：US5143522A
公开(公告)日：1992-09-01
申请号：US277618
申请日：1988-11-29
申请人： Brian Gibson , Robert J. Seider
发明人： Brian Gibson , Robert J. Seider
IPC分类号： C09K3/14
CPC分类号： C09K3/1427
摘要： An abrasive grain comprising about 20 to about 50% by weight of zirconia; reduced titania in an amount on analysis expressed as titanium dioxide of 1.5 to about 10% by weight; total carbon in an amount of 0.03 to about 0.5% by weight; impurities, if any, in a total amount on analysis expressed as the oxides of not greater than 3% by weight; and a balance of alumina. The microstructure of the abrasive grain comprises primary alumina or zirconia crystals embedded in a supporting alumina-zirconia eutectic matrix. The grain may be produced by combining and melting the alumina and zirconia; adding titania and carbon (excess carbon being required); melting and reducing the titania under reducing furnace conditions; and solidifying the melt in under three minutes by means of a suitable heat sink material. The abrasive grain has a high proportion of tetragonal zirconia and may be used to produce coated abrasive products or bonded abrasive products.
摘要翻译： 包含约20至约50重量％的氧化锆的磨料颗粒; 还原二氧化钛，其分析量表示为二氧化钛为1.5至约10重量％; 总碳量为0.03至0.5重量％; 杂质，如果有的话，以分析总量表示为不大于3重量％的氧化物; 和氧化铝的余量。 磨粒的微观结构包括嵌入支撑氧化铝 - 氧化锆共晶基质中的初级氧化铝或氧化锆晶体。 可以通过将氧化铝和氧化锆组合和熔化来生产晶粒; 添加二氧化钛和碳（需要过量的碳）; 在还原炉条件下熔化和还原二氧化钛; 并在三分钟内通过合适的散热材料固化熔体。 磨粒具有高比例的四方晶氧化锆，可用于生产涂覆的磨料产品或粘合磨料产品。
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2.发明授权
公开(公告)号：US4810368A
公开(公告)日：1989-03-07
申请号：US55125
申请日：1987-05-28
CPC分类号： B03C1/01 , C01B31/36 , C01P2004/50 , C01P2006/42 , C01P2006/60 , C01P2006/80
摘要： Method of automatically separating and cleaning silicon carbide furnace materials using magnetic separation techniques. In the method of the invention, crushed or particulate silicon carbide furnace materials are mixed with a magnetic powder. The lower grade silicon carbide particles are then separated from the first grade silicon carbide crystals using magnetic separation. Recoveries of at least 75% of the first grade silicon carbide are possible using the method of the invention. This method is also useful for the beneficiation of ores, minerals, or man-made materials.
摘要翻译： 使用磁选技术自动分离和清洁碳化硅炉材料的方法。 在本发明的方法中，将粉碎的或颗粒状的碳化硅炉材料与磁性粉末混合。 然后使用磁分离将较低级别的碳化硅颗粒与一级碳化硅晶体分离。 使用本发明的方法可以回收至少75％的一级碳化硅。 这种方法对于矿石，矿物质或人造材料的选矿也是有用的。
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3.发明授权Superior high alkali metal and calcium sol gel abrasive and processes for its production 失效优良的高碱金属和钙溶胶凝胶磨料及其生产工艺
公开(公告)号：US5770145A
公开(公告)日：1998-06-23
申请号：US446112
申请日：1995-05-19
申请人： Alvin P. Gerk , Robert J. Seider
发明人： Alvin P. Gerk , Robert J. Seider
CPC分类号： C01F7/441 , B24D11/00 , B24D3/14 , C09K3/1418 , C01P2004/61 , C01P2004/62 , C01P2006/21
摘要： A process for forming a ceramic alumina-based abrasive grain from a sol gel which contains aluminum oxide monohydrate, a dissolved metal containing sintering aid and sufficient sodium and/or calcium compound to provide in the ceramic from above about 0.05 to about 1.8 weight percent sodium plus calcium, provided that the weight percent calcium is from 0 to about 1.8 and the weight percent sodium is from 0 to about 0.4. The high sodium and calcium is permitted due to rapid heating of the sol gel after drying through a temperature range of from below about 800.degree. C. to above about 1200.degree. C., prior to sintering the dried gel at a temperature above 1200.degree. C. A grain made by the process and coated, bonded and non-woven abrasive articles comprising the grain.
摘要翻译： 一种由溶胶凝胶形成陶瓷氧化铝基磨料颗粒的方法，该溶胶凝胶含有一氧化铝一水合物，含溶解金属的烧结助剂和足够的钠和/或钙化合物，以从陶瓷中提供约0.05至约1.8重量％的钠 加钙，条件是钙的重量百分比为0至约1.8，而钠的重量百分比为0至约0.4。 在高于1200℃的温度下烧结干燥的凝胶之前，由于溶胶凝胶在干燥后的温度范围从低于约800℃至高于约1200℃的快速加热，允许高钠和钙。 由该方法制成的颗粒和包含该颗粒的涂布粘结和非织造的磨料制品。
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4.发明授权
公开(公告)号：US4686032A
公开(公告)日：1987-08-11
申请号：US721761
申请日：1985-04-10
CPC分类号： C01B31/36 , B03C1/01 , C01P2004/50 , C01P2006/42 , C01P2006/60 , C01P2006/80
摘要： Method of automatically separating and cleaning silicon carbide furnace materials using magnetic separation techniques. In the method of the invention, crushed or particulate silicon carbide furnace materials are mixed with a magnetic powder. The lower grade silicon carbide particles are then separated from the first grade silicon carbide crystals using magnetic separation means. Recoveries of at least 75% of the first grade silicon carbide are possible using the method of the invention. This method is also useful for the beneficiation of ores, minerals, or man-made materials.
摘要翻译： 使用磁选技术自动分离和清洁碳化硅炉材料的方法。 在本发明的方法中，将粉碎的或颗粒状的碳化硅炉材料与磁性粉末混合。 然后使用磁选机将较低等级的碳化硅颗粒与一级碳化硅晶体分离。 使用本发明的方法可以回收至少75％的一级碳化硅。 这种方法对于矿石，矿物质或人造材料的选矿也是有用的。
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公开(公告)号：USRE31725E
公开(公告)日：1984-11-06
申请号：US183495
申请日：1980-09-02
申请人： Thomas B. Walker , Robert J. Seider , Paul Cichy
发明人： Thomas B. Walker , Robert J. Seider , Paul Cichy
CPC分类号： B24D3/00 , B24D3/14 , B24D3/285 , C09K3/1427
摘要： A fused abrasive grain, useful for inclusion in coated abrasives and bonded abrasives, consists essentially of alumina; titanium oxide containing from about 0.42 to about 0.84% titaniun, by weight of the abrasive grain, present as a reduced titanium oxide having an average oxidation state lower than in Ti.sub.2 O.sub.3 ; from about 0.05 to about 0.3% by weight carbon; from about 0.02 to about 0.1% by weight Na.sub.2 O; and from 0 to about 0.1% by weight total of calcium and silicon oxides. The grain before roasting has a gain on ignition of from about 0.4 to about 0.7% by weight, and is produced in an electric furnace by fusing high-purity titania, alumina containing Na.sub.2 O as the only significant oxide impurity, and carbon, followed by crushing and roasting the fused grain.
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公开(公告)号：US4157898A
公开(公告)日：1979-06-12
申请号：US896269
申请日：1978-04-14
申请人： Thomas B. Walker , Robert J. Seider , Paul Cichy
发明人： Thomas B. Walker , Robert J. Seider , Paul Cichy
CPC分类号： C09K3/1427 , B24D3/285
摘要： A fused abrasive grain, useful for inclusion in coated abrasives and bonded abrasives, consists essentially of alumina; titanium oxide containing from about 0.42 to about 0.84% titaniun, by weight of the abrasive grain, present as a reduced titanium oxide having an average oxidation state lower than in Ti.sub.2 O.sub.3 ; from about 0.05 to about 0.3% by weight carbon; from about 0.02 to about 0.1% by weight Na.sub.2 O; and from 0 to about 0.1% by weight total of calcium and silicon oxides. The grain before roasting has a gain on ignition of from about 0.4 to about 0.7% by weight, and is produced in an electric furnace by fusing high-purity titania, alumina containing Na.sub.2 O as the only significant oxide impurity, and carbon, followed by crushing and roasting the fused grain.
摘要翻译： 可用于包含在涂层磨料和粘结研磨剂中的熔融磨料主要由氧化铝组成; 以磨料颗粒的重量计含有约0.42至约0.84％钛的二氧化钛，其平均氧化态的平均氧化态低于Ti 2 O 3; 约0.05至约0.3重量％的碳; 约0.02至约0.1重量％的Na 2 O; 和0至约0.1重量％的钙和硅氧化物的总量。 焙烧前的谷物的灼烧增益为约0.4〜约0.7重量％，并通过熔融高纯度二氧化钛，含有Na2O作为唯一显着的氧化物杂质的氧化铝和碳，然后在电炉中进行粉碎 并烘烤融合的粮食。
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公开(公告)号：US5161696A
公开(公告)日：1992-11-10
申请号：US688096
申请日：1991-04-19
申请人： Robert J. Seider
发明人： Robert J. Seider
IPC分类号： B03C7/12
CPC分类号： B03C7/12
摘要： A method of electrically separating differing shapes of abrasive grain materials by imposing a high voltage corona induction charge to free-falling abrasive particles, polarization thereof and attraction thereof to a high voltage oppositely charged electrical field is disclosed, along with apparatus by which the method is practiced and the characteristics of shape of the particles of abrasive grain materials so separated.
摘要翻译： 公开了一种通过将高电压电晕感应电荷施加到自由落下的磨料颗粒，其极化以及吸引到高电压相反电荷的电场来电分离磨粒材料的不同形状的方法，其中该方法是 实践和磨粒颗粒的形状特点如此分离。
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8.发明授权
公开(公告)号：US4659022A
公开(公告)日：1987-04-21
申请号：US795188
申请日：1985-11-05
CPC分类号： B03C1/01 , B03C1/00 , C01B31/36 , C01P2004/50 , C01P2006/42 , C01P2006/60 , C01P2006/80
摘要： Method of producing silicon carbide and of automatically separating a high grade fraction thereof using magnetic separation techniques. In the method of the invention, a silicon source, a carbon source and a ferromagnetic element source are admixed and the admixture is heated from the center outward to form a cylinder containing silicon carbide with a center to exterior temperature gradient. The ferromagnetic element migrates from the hotter center to the cooler exterior portions of the cylinder. The cylinder is cooled and crushed. The lower grade silicon carbide particles are then separated from the high grade silicon carbide crystals using magnetic separation means.
摘要翻译： 使用磁选技术生产碳化硅并自动分离高级分的方法。 在本发明的方法中，将硅源，碳源和铁磁元件源混合，并将混合物从中心向外加热以形成具有中心至外部温度梯度的含有碳化硅的圆筒。 铁磁元件从较热的中心移动到气缸的较冷的外部部分。 将圆筒冷却并压碎。 然后使用磁选机将较低级别的碳化硅颗粒与高级碳化硅晶体分离。
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公开(公告)号：USRE31128E
公开(公告)日：1983-01-18
申请号：US183496
申请日：1980-09-02
申请人： Thomas B. Walker , Robert J. Seider , Paul Cichy
发明人： Thomas B. Walker , Robert J. Seider , Paul Cichy
IPC分类号： C09K3/14
CPC分类号： C09K3/1427
摘要： A fused abrasive grain, useful for inclusion in coated abrasives and bonded abrasives, consists essentially of alumina; titanium oxide containing from about 0.42 to about 0.84% titanium, by weight of the abrasive grain, present as a reduced titanium oxide having an average oxidation state lower than in Ti.sub.2 O.sub.3 ; from about 0.05 to about 0.3% by weight carbon; from about 0.02 to about 0.1% by weight Na.sub.2 O; and from 0 to about 0.1% by weight total of calcium and silicon oxides. The grain before roasting has a gain on ignition of from about 0.4 to about 0.7% by weight, and is produced in an electric furnace by fusing high-purity titania, alumina containing Na.sub.2 O as the only significant oxide impurity, and carbon, followed by crushing and roasting the fused grain.
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公开(公告)号：US4111668A
公开(公告)日：1978-09-05
申请号：US691817
申请日：1976-06-01
CPC分类号： C09K3/1427 , B24D3/285
摘要： A fused abrasive grain, useful for inclusion in coated abrasives and bonded abrasives, consists essentially of alumina; titanium oxide containing from about 0.42 to about 0.84% titanium, by weight of the abrasive grain, present as a reduced titanium oxide having an average oxidation state lower than in Ti.sub.2 O.sub.3 ; from about 0.05 to about 0.3% by weight carbon; from about 0.02 to about 0.1% by weight Na.sub.2 O; and from 0 to about 0.1% by weight total of calcium and silicon oxides. The grain before roasting has a gain on ignition of from about 0.4 to about 0.7% by weight, and is produced in an electric furnace by fusing high-purity titania, alumina containing Na.sub.2 O as the only significant oxide impurity, and carbon, followed by crushing and roasting the fused grain.
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