摘要:
A method of tracking and reporting the velocity of a hand-held paint spray gun. The object to be painted is placed in a room having one or more fiducial walls. A camera is installed on the spray gun, with its field of view toward the one or more fiducial walls. As the object is painted, the camera detects fiducials, calculates their current position, and compares current positions to previous locations to determine movement and velocity. The current velocity is compared to a stored target velocity, and audible or visible feedback is provided to the spray gun operator.
摘要:
A process for the extraction of metal from an ore or concentrate which contains nickel and/or cobalt values and other metals, comprises subjecting the ore or concentrate to acid leaching under pressure at pH≦2 to obtain a liquor containing nickel and/or cobalt values, subjecting the liquor to a first precipitation stage at pH of about 5 to 6 to produce a solid containing non nickel and non cobalt metals and a resultant solution containing the nickel and/or cobalt values and subjecting the resultant solution to a second precipitation stage at a pH of about 7 to 8 to produce a solid containing nickel and/or cobalt.
摘要:
A method and apparatus are provided for transferring a physically disabled person through a vehicle's driver side door opening to and from a driving position behind the steering wheel of the vehicle. The method and apparatus contemplate the use of a seat assembly, including a seat having a back support, a seat frame, and lift means for lifting and lowering the seat relative to the seat frame. A hinge assembly is mounted inside the vehicle for pivoting the seat assembly about a vertical axis and supports the weight of the seat assembly. The lift means is slidable relative to the hinge assembly. Powered means are mounted to a floor within the vehicle for rotating the seat assembly via the hinge assembly between an outwardly facing position, wherein the lift seat may be lifted or lowered by the lift means outside the vehicle, and an intermediate forwardly facing position inside the vehicle. The powered means also provide for lateral movement of the seat assembly between the intermediate forwardly facing position and a driving position behind the vehicle's steering wheel.
摘要:
A process for the extraction of a metal from an ore or concentrate comprises subjecting the ore or concentrate to pressure oxidation in the presence of oxygen and an acidic solution containing halogen ions and a source of bisulphate or sulphate ions, such as H.sub.2 SO.sub.4. The metals which can be extracted by the process comprises copper as well as non-cuprous metals such as zinc, nickel and cobalt. During pressure oxidation the metal may be precipitated as an insoluble basic salt, such as basic copper sulphate, or substantially completely solubilized and precipitated later as the basic metal salt.
摘要翻译:从矿石或浓缩物中提取金属的方法包括使矿石或浓缩物在氧气和含有卤素离子的酸性溶液和硫酸根离子源如H 2 SO 4的存在下进行压力氧化。 可以通过该方法提取的金属包括铜以及非亚铜金属如锌,镍和钴。 在压力氧化期间,金属可以沉淀为不溶性碱性盐,例如碱式硫酸铜,或者基本上完全溶解并沉淀为碱性金属盐。
摘要:
Copper arsenate, substantially free from impurities that form sludge in wood preservatives such as chromated copper arsenate, is prepared by adding a solution of soluble arsenate to copper sulfate solution, either or both solutions containing sludge-forming impurities, to form a copper and arsenic-containing solution without precipitating copper arsenate. The pH during the adding is controlled at a value in the range of 1.8 to 2.2 to precipitate impurities. Precipitated impurities are removed, and the copper and arsenic-containing solution is neutralized with a suitable alkaline substance to pH 3.5 to 5.0 to precipitate copper arsenate. Arsenate solution is derived from arsenic oxides, soluble arsenic salts and compounds and metallurgical materials capable of yielding water-soluble arsenate. Copper sulfate solution is derived from crystals and compounds and metallurgical materials cable of yielding copper sulfate. In a preferred embodiment, sodium arsenate is derived by aqueous caustic oxidative pressure leaching of flue dusts and copper sulfate is derived by aqueous acid oxidative pressure leaching of copper matte.
摘要:
A container (10) comprises a body having a base (12), two pairs of opposed side walls (14,16) extending upwardly from the base (12) to define a corner (15a,15b,15c,15d) between adjacent side walls (14,16). Four support members, (32a,32b,32c,32d) are provided, each support member being disposed at a respective corner. The support members are selectively movable between a first position in which a further container can be nested inside the body, and a second position in which the support members can support the further container above the base. A first pair of said support members (32a,32b) is connected together by a first connecting member (34) provided therebetween, and a second pair of said support members (32c,32d) is connected together by a second connecting member (36) provided therebetween.
摘要:
A method of tracking and reporting the velocity of a hand-held paint spray gun. The object to be painted is placed in a room having one or more fiducial walls. A camera is installed on the spray gun, with its field of view toward the one or more fiducial walls. As the object is painted, the camera detects fiducials, calculates their current position, and compares current positions to previous locations to determine movement and velocity. The current velocity is compared to a stored target velocity, and audible or visible feedback is provided to the spray gun operator.
摘要:
A method of treatment or purification of a molybdenum concentrate also containing copper, comprises the step of subjecting the molybdenum concentrate to pressure oxidation in the presence of oxygen and a feed solution containing copper (e.g. CuSO4) and halide (e.g. CuCl2) to produce a pressure oxidation solution containing copper and a solid residue containing molybdenum. The pressure oxidation solution may be combined with feed solution to a second pressure oxidation in which a copper concentrate is treated for the recovery of copper therefrom.
摘要翻译:处理或纯化还含有铜的钼精矿的方法包括在氧气和含铜的进料溶液(例如CuSO 4 H 4)和卤化物的存在下使钼浓缩物经受压力氧化的步骤 (例如CuCl 2 H 2),以产生含有铜的固体残余物和含钼的压力氧化溶液。 压力氧化溶液可以与进料溶液组合到第二压力氧化,其中处理铜精矿以从中回收铜。
摘要:
A process for the extraction of copper from a sulphide ore or concentrate comprises the steps of subjecting the ore or concentrate to pressure oxidation in the presence of oxygen and an acidic solution containing halide and sulphate ions to obtain a resulting pressure oxidation slurry. The slurry is subjected to a liquid/solid separation step to obtain a resulting pressure oxidation filtrate and a solid residue containing an insoluble basic metal sulphate salt. The basic metal sulphate salt is leached in a second leaching with an acidic sulphate solution to dissolve the basic metal salt to produce a leach liquor containing a metal sulphate, e.g. copper sulphate, in solution and a resulting solid residue. The leach liquor is separated from the solid residue and subjected to a solvent extraction process to produce metal concentrate solution and a metal depleted raffinate. At least a portion of the raffinate is recycled to the pressure oxidation after being subjected to evaporation.
摘要:
An apparatus is provided for moving a toilet seat between a lowered position immediately above a toilet bowl and a raised position above the toilet bowl to assist a physically disabled person to use a toilet. The apparatus includes a toilet seat having a passageway therethrough, a baseplate positioned about the base of a toilet bowl, and a pair of fluid power cylinders supporting the toilet seat for vertical movement between a lowered position immediately above the toilet bowl and an raised position from which the person can easily move between a standing position and a position at least partially supported on the toilet seat. Each of the cylinders has a piston rod extending downwardly therefrom and connected to the baseplate. Fluid lines provide pressurized fluid to the cylinders through the passageway in the toilet seat. Control means deliver the pressurized fluid to the cylinders to raise the toilet seat from the lowered position to the raised position, and exhaust pressurized fluid from the cylinders to lower the toilet seat from the raised position to the lowered position whereby a physically disabled person is assisted down to and up from a seated position immediately above the toilet bowl.