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公开(公告)号：US3928236A
公开(公告)日：1975-12-23
申请号：US52709374
申请日：1974-11-25
CPC分类号： B01J21/04 , B01J20/08 , Y10S502/50
摘要： Thermally stable, shaped alumina catalyst carriers are made by treating an alumina shape of predominantly chi-rho-eta or pseudoboehmite crystalline phase structure, or mixtures thereof, with an ammonium salt in an aqueous medium under pressure within the temperature range of about 100*C and 250*C, followed by removal of water-leachable constituents and a subsequent thermal activation step. The products exhibit high thermal stability at elevated temperatures.
摘要翻译： 热稳定的成型氧化铝催化剂载体通过在约100℃的温度范围内的压力下在水性介质中处理主要为氯化钙或假勃姆石结晶相结构的氧化铝形式或其混合物与铵盐 和250℃，然后除去水可浸出的组分和随后的热活化步骤。 该产品在高温下表现出高的热稳定性。
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公开(公告)号：US3906184A
公开(公告)日：1975-09-16
申请号：US36389873
申请日：1973-05-25
发明人： GIBBS FRANCIS E , DEMPSEY JOHN J
CPC分类号： B23K9/0732 , B23K9/125
摘要： This invention relates to an improved method and system for automatically controlling the GMA welding process wherein the welding current is coordinated with the measured feed rate of electrode filler wire, the electrode feed rate being independently controlled. Provisions are made to accommodate current modification for out-of-position welding and also for flat and out-of-position crater filling.
摘要翻译： 本发明涉及一种用于自动控制GMA焊接工艺的改进方法和系统，其中焊接电流与所测量的电极填充焊丝进料速率配合，电极进料速率是独立控制的。 为了适应当前的位置焊接修改以及平坦和不适当的火山口填充而进行的规定。
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公开(公告)号：US3895971A
公开(公告)日：1975-07-22
申请号：US36176373
申请日：1973-05-18
发明人： BUSHEY ALBERT H , MCDOLE EWELL E
CPC分类号： C23C22/66
摘要： An improved highly simplified method of lubricating an aluminum workpiece for subsequent working wherein a coating of complex alkaline earth metal aluminates is first formed and then a suitable lubricant is applied to the coating.
摘要翻译： 一种改进的高度简化的用于后续加工的铝工件的润滑方法，其中首先形成复合碱土金属铝酸盐的涂层，然后将适当的润滑剂施加到涂层上。
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公开(公告)号：US3848055A
公开(公告)日：1974-11-12
申请号：US37912573
申请日：1973-07-13
发明人： KELLY A
摘要： 1. METHOD OF PRODUCING STRONTIUM HYDROXIDE FROM STRONTIUM SULFATE COMPRISING: (A) REACTING A FINELY DIVIDED CELESTITE WITH SUFFICIENT AQUEOUS SODIUM HYDROXIDE SOLUTION TO FORM A SLURRY, THE SOLUTION CONTAINING SUFFICIENT NAOH TO MAINTAIN A CONCENTRATION OF AT LEAST 10 G./L. NAOH AFTER REACTION OF THE SODIUM HYDROXIDE IN THE SOLUTION WITH THE CELESTITE TO FORM STRONTIUM HYDROXIDE, THE REACTION BEING CARRIED OUR AT A TEMPERATURE BELOW THE BOILING POINT OF WATER; (B) SEPARATING THE SOLID MATERIAL RESULTING FROM STEP (A) FROM THE AQUEOUS SOLUTION; (C) WASHING THE SOLID MATERIAL SEPARATED IN STEP (B) TO DISSOLVE AND REMOVE ANY SOLID SODIUM SULFATE PRESENT; SAID WASHING BEING CONDUCTED AT A TEMPERATURE OF NOT GREATER THAN THAT OF THE REACTION OF STEP (A); (D) DISSOLVING THE STRONTIUM HYDROXIDE IN THE WASHED SOLID MATERIAL PRODUCED IN STEP (C) IN WATER AT A TEMPERATURE OF AT LEAST 90* C.; (E) SEPARATING THE STRONITUM HYDROXIDE SOLUTION PRODUCED IN STEP (D) FROM THE REMAINING SOLIDS; AND (F) RECOVERING STRONTIUM VALUES FROM THE SEPARATED SOLUTION.
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公开(公告)号：US3847206A
公开(公告)日：1974-11-12
申请号：US26250972
申请日：1972-06-14
发明人： FOYE J
IPC分类号： B22D11/08
CPC分类号： B22D11/083
摘要： This invention relates to a self-centering bottom block for a direct chill (D.C.) casting apparatus. The assembly comprises a bottom block which is slidably mounted on a supporting surface and a retaining ring which loosely locks the bottom block to the supporting surface but which allows for the horizontal movement of the bottom block. As the assembly is raised into position, guide buttons on the exterior surfaces of the assembly ride on guide surfaces which are fixed spatially with respect to the mold bore and thereby center the assembly within the mold bore. In another embodiment of the invention, the bottom block assembly is provided with a means which engages the ingot during the initial phases of solidification and urges the ingot during the initial phases of solidification and urges the ingot out of the mold but which readily disengages the ingot after casting.
摘要翻译： 本发明涉及一种用于直接冷却（DCC）铸造设备的自定心底块。 组件包括可滑动地安装在支撑表面上的底部块和将底部块松动地锁定到支撑表面但允许底部块的水平移动的保持环。 当组件升高到位置时，组件的外表面上的引导按钮骑在相对于模具孔空间固定的导向表面上，从而使组件在模具孔内居中。 在本发明的另一个实施例中，底部块组件设置有在凝固的初始阶段期间接合锭的装置，并且在凝固的初始阶段期间促使铸块移动，并且将铸锭推出模具，但是容易地使铸锭脱离 铸造后。
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公开(公告)号：US3816146A
公开(公告)日：1974-06-11
申请号：US29928572
申请日：1972-10-20
发明人： CASSENS N
CPC分类号： C04B35/6303 , C04B35/013 , C04B35/632 , C04B35/66 , C04B2235/3206 , C04B2235/3241 , C04B2235/3418
摘要： A ready-to-use refractory ramming mix which contains fine periclase and which can be rapidly heated immediately after being formed is made from refractory aggregate and, as bond, a mixture of oil and wax. The composition may also contain high temperature bonding and sintering agents such as volatilized silica and chromic oxide.
摘要翻译： 包含精细的皮质酯并且可以在形成之后立即被快速加热的即用型耐火捣混混合物由耐火骨料和作为粘合剂的油和蜡的混合物制成。 组合物还可以含有高温键合和烧结剂，例如挥发性二氧化硅和氧化铬。
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7.发明授权Process for the recovery of sodium fluoride from waste fluoridic material and preparation of na3 fef6 失效从废物氟化物材料中回收氟化钠的方法和制备NA3 FEF6
公开(公告)号：US3808322A
公开(公告)日：1974-04-30
申请号：US37000473
申请日：1973-06-14
CPC分类号： C01G49/009 , C01P2006/80 , Y10S210/915
摘要： SODIUM FLUOFERRATE (NA3FEF6), A FLUORINATING AGENT FOR CONVERTING CHLOROALKANES TO CHLOROFLUOROALKANES, IS PREPARED IN HIGH PURITY FROM SPENT, CARBONACEOUS FLUORINECONTAINING LININGS OF ALUMINUM REDUCTION CELLS. THE SPENT LINING, IS, AFTER COMMINUTION, SUBJECTED TO CONTROLLED CALCINATION AND THE RESIDUE IS THEN SELECTIVELY LEACHED TO RECOVER SUBSTANTIALLY PRE NAF SOLUTION. ADJUSTMENT OF THE PH PRECIPITATES RESIDUAL NA3ALF6 IMPURITIES AND THE FILTRATE IS DIRECTLY USED FOR THE PREPARATION OF NA3FEF6 BY ADDITION OF FECL3 AND NACL.
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公开(公告)号：US3791816A
公开(公告)日：1974-02-12
申请号：US3791816D
申请日：1972-03-30
发明人： ISRAEL R
摘要： A process for producing nickel of high purity and with high recovery from nickel-bearing materials containing nickel and less noble metals including cobalt and iron, such as ores and alloys. A molten slag phase and molten metal phase is provided in a furnace having an elongated flow path in which the nickel of high purity is removed at a point near one end of the furnace while molten slag highly impoverished with respect to nickel oxide is removed at a point near the other end. A metal purification zone and a slag treating zone are established in the vicinity of the molten metal removal point and the molten slag removal point, respectively. An intermediate zone is located between the metal purification zone and the slag treating zone, and a countercurrent movement between the slag and metal phases is induced, the said slag phase flows from the metal purification zone through the intermediate zone to the slag treating zone while the metal phase flows from the slag treating zone through the intermediate zone to the metal purification zone. Oxidation of the metal phase in the metal purification zone provides the nickel in high purity, while treatment of the slag in the slag treating zone with a reducing agent effects a high recovery. Interphase contact and intraphase mixing between the slag and metal phases is promoted during their flows. At least periodically, a portion of the metal present in the metal phase in the intermediate zone, which is rich in cobalt, is removed.
摘要翻译： 一种生产高纯镍，高镍回收率的方法，含镍和少量贵金属，包括钴和铁，如矿石和合金。 熔融炉渣相和熔融金属相设置在具有细长流动路径的炉子中，其中在炉子的一端附近的位置处除去高纯度的镍，同时，在熔融炉渣相对于氧化镍高度贫化的熔渣中， 指向另一端附近。 在熔融金属去除点和熔渣去除点附近分别建立金属净化区和渣处理区。
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公开(公告)号：US3770424A
公开(公告)日：1973-11-06
申请号：US3770424D
申请日：1971-09-07
发明人： FLOYD P , BINCZEWSKI G
CPC分类号： C22B21/0069 , C22B7/04 , Y02P10/212
摘要： A process for recovering metal values from furnace skim comprising a controlled wet comminution of the skim at a reduced work input level in a ball mill having a ball charge of from 5 to 20 percent of the internal mill volume. The comminuted product is separated into a coarse and fine fraction, the coarse fraction being substantially metal and the fine fraction being substantially non-metals such as oxides, nitrides, and the like.
摘要翻译： 一种用于从炉渣回收中回收金属值的方法，包括在具有5至20％的内部磨机体积的球磨机的球磨机中减少的工作输入水平下的脱脂受控湿的粉碎。 粉碎的产品被分成粗和细级分，粗级分基本上是金属，细分是基本上非金属的，例如氧化物，氮化物等。
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公开(公告)号：US3758318A
公开(公告)日：1973-09-11
申请号：US3758318D
申请日：1971-03-29
IPC分类号： C04B35/18 , C04B35/185 , C04B35/10
CPC分类号： C04B35/185 , C04B35/18
摘要： METHOD OF MAKING HIGHLY PURITY SYNTHETIC MULLITE WHEREIN FINELY DIVIDED ALUMINOUS (E.G., ALUMINUM TRIHYDRATE) AND ALUMINOSILICATE (E.G., KAOLIN CLAY) RAW MATERIALS ARE LIGHTLY CALCINED, AT A TEMPERATURE BETWEEN 750 AND 1150* C., AND MILLED PRIOR TO FIRING TO FORM MULLITE REFRACTORY. PREFERABLY THE MILLED CALCINED MATERIALS ARE COMPACTED PRIOR TO FIRING.
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