104results about How to "Increased nickel content" patented technology

The invention relates to a LiaNixCoyMny′M′zO2 composite oxide for use as a cathode material in a rechargeable battery, with a non-homogenous Ni / M′ ratio in the particles, allowing excellent power and safety properties when used as positive electrode material in Li battery. More particularly, in the formula 0.9<a<1.1, 0.3≦x≦0.9, 0<y≦0.4, 0<y′≦0.4, 0<z≦0.35, e<0.02, 0≦f≦0.05 and 0.9<(x+y+y′+z+f)<1.1;M′ consists of either one or more elements from the group Al, Mg, Ti, Cr, V, Fe, Mn and Ga; N consists of either one or more elements from the group F, Cl, S, Zr, Ba, Y, Ca, B, Sn, Sb, Na and Zn. The powder has a particle size distribution defining a D10, D50 and D90; and the x and z parameters varying with the particles size of the powder, and is characterized in that either one or both of:x1−x2≧0.005andz2−z1≧0.005;x1 and z1 being the parameters corresponding to particles having a particle size D90; and x2 and z2 being the parameters corresponding to particles having a particle size D10.

The invention relates to a technology for smelting ferronickel from lateritic nickel ore by an electric furnace. The technology comprises the steps as follows: (1) raw material is pretreated: the lateritic nickel is counted as one ton, coal powder with the weight of 8-12 percent of the weight of the lateritic nickel or coke powder with the weight of 6-10 percent of the weight of the lateritic nickel is added into the lateritic nickel to be mixed uniformly and returned to a rotary kiln to be sintered at the temperature of 600 DEG C to 1000 DEG C for 3 to 6 hours, wherein, the pre-reduction of 20-30 percent of NiO is achieved; (2) the raw material is put into a submerged arc furnace to be smelted: an electric furnace magnesia and carbon mixture furnace lining is arranged; adjustable electric furnace voltage is set with the high voltage of 280-300V and the low voltage of 200-220V, and that is the high voltage starts arc, and after 30 minutes, the electric furnace is changed to low voltage for smelting and calcining an electrode; the charge of smelting furnace charging material consists of one ton of sintered nickel and 90-120kg of fusing agent lime; coke or coal is added as a reducer; the raw material and the auxiliary material are put into the electric furnace to be smelted; and (3) crude ferronickel is refined: liquid molten iron is put into a finery, and a refining agent is added for refining by oxygen blast. A product contains more than 13 percent of nickel, thereby satisfying the requirement of producing high-quality steel material product; and the recovery rate of nickel element is more than 95 percent. The technology has simple technology, saves energy and has high efficiency.