Abstract:
The invention relates to a device and a method for the production of compounds by precipitation of solids from solutions, the physical and chemical properties of the solid particles formed on precipitation being flexible and can be independently fixable. Custom products can thus be produced with very high space-time yields and a particulate nickel/cobalt mixed hydroxide of formula NixCo1-x(OH)2, with a BET surface area of 20 m2/g and a tap density of greater than 2.4 g/cm3.
Abstract:
New glass fibers having an average length of about 100 to 400 &mgr;m and an apparent density of about 1 to 0.2 g/cm3 are produced by spinning glass fibers, comprising spinning glass fibers into bundles, cooling with liquid to form wet bundles, directly cutting such bundles in the wet state, without previous drying, grinding said bundles to milled glass fibers in a high-efficiency mixer with the addition of a liquid, and then drying. The fibers are especially suited for filling polyurethanes by the PUR-RIM process.
Abstract translation:平均长度约为100〜400μm,表观密度约为1〜0.2g / cm 3的新型玻璃纤维是通过纺丝玻璃纤维而制成的,其中包括将玻璃纤维纺丝成束,用液体冷却以形成湿束,直接切割 在潮湿状态下的束,没有预先干燥,在加入液体的高效混合器中将所述束研磨成研磨的玻璃纤维,然后干燥。 纤维特别适用于通过PUR-RIM工艺填充聚氨酯。
Abstract:
Controlled release medicament pellets comprisinga) a core which contains as active ingredient a compound of the formula ##STR1## or a compound from the group of 3-(4-fluorophenylsulphonamido)-1,2,3,4-tetrahydro-9-carbazole propanoic acid or 2-[4-[4-(2-pyrimidinyl)-1-piperazinyl]butyl]-1,2-benzisothiazol-3 (2H)-one 1,1-dioxide monohydrochloride, an intensive disintegrating agent, a wetting agent and a binder,b) a double layer which controls release comprising(b1) an acrylic-based outer undigestible water-permeable lacquer layer, and(b2) an inner jacket layer comprising a hydrophobic additive and hydroxypropylcellulose of type M or H.
Abstract:
A process for digesting molybdenum oxide concentrates includes suspending a molybdenum-containing starting material in an aqueous solution so as to obtain a suspension. While stirring, an oxidizing agent and an alkali solution of at least one alkali metal are metered to the suspension so as to set a pH and produce a product having a molybdenum content of at least 98% of the molybdenum-containing starting material. The alkali metal is selected from the group consisting of Na, K and Li.
Abstract:
A process for preparing nickel hydroxide by alkaline precipitation from nickel salt solutions in the presence of complexing agents, in which the precipitation is carried out at at least two different locations in the same mother liquor with different precipitation kinetics at the different locations and the mother liquor is mixed prior to agglomeration of the precipitated primary crystals, is described.
Abstract:
The invention relates to a method for producing lithium-transition metal mixtures of general formula Lix(M1yM21-y)nOnz, wherein M1 represents nickel, cobalt or manganese, M2 represents chromium, cobalt, iron, manganese, molybdenum or aluminium, and is different from M1, n is 2 if M1 represents manganese and is 1 otherwise, x is comprised between 0.9 and 1.2, y is comprised between 0.5 and 1.0 and z is comprised between 1.9 and 2.1. According to the inventive method, an intimate mixture composed of transition metal compounds containing oxygen and of a lithium compound containing oxygen is calcinated, said mixture being obtained by processing a solid powder transition metal compound with a solution of said lithium compound, and then drying. At least the M1 compound is used in powder form having a specific surface of at least 20 m2/g (BET) and calcination is carried out in a fluidised bed.
Abstract translation:本发明涉及一种制备通式为Lix(M 1 yM 2-y)n O n z的锂 - 过渡金属混合物的方法,其中M 1表示镍,钴或锰,M 2表示铬 ,钴,铁,锰,钼或铝,并且不同于M 1,如果M 1表示锰,则n为2,否则为1,x为0.9至1.2,y为0.5至1.0 z在1.9和2.1之间。 根据本发明的方法,煅烧由含有氧的过渡金属化合物和含氧化合物的锂化合物组成的紧密混合物,所述混合物通过用所述锂化合物的溶液处理固体粉末过渡金属化合物,然后干燥而获得。 至少M 1化合物以比表面积至少为20m 2 / g(BET)的粉末形式使用,并且在流化床中进行煅烧。
Abstract:
Microcrystalline bodies based on .alpha.-Al.sub.2 O.sub.3 are made by drying sub-micron powders, press compacting and shock sintering at an intermediate sinter temperature range of 1,300.degree. to 1,550.degree. C., i.e. bringing the compact up to such range in under 60 seconds, preferably under 10.
Abstract:
The present invention relates to cobalt metal agglomerates consisting of peanut-shaped primary particles with average particle sizes in the range from 0.5 to 2 .mu.m, to a process for the production thereof and to the use thereof.
Abstract:
A process for the continuous fluidized bed agglomeration of a solid in powder form, wherein the powder, a granulating liquid and propelling air are fed through a three-substance nozzle into the center of a fluidized bed to form a three-phase mixture in the center of the fluidized bed.
Abstract:
Process for the continuous fluidized bed agglomeration wherein the granulating liquid together with propellant air is supplied centrally through a three-phase nozzle on the distributor of the fluidized bed, and at the same time, the solid in powder form is fed into the fluidized bed through the annular space or the three-phase nozzle with the air of a current of propellant air, supplied separately and concentrically.