A method for treating a mineral composition containing iron, arsenic or other Group VA compounds comprises milling the mineral composition to a particle size of P.sub.80 of less than 25 m and leaching the mineral composition in the presence of lime and/or limestone and a soluble alkali complexing agent and in the presence of an oxygen containing gas at a pH in the range of from 3.5 to 6.

A method for treating a mineral composition containing iron, arsenic or other Group VA compounds comprises milling the mineral composition to a particle size of P.sub.80 of less than 25 m and leaching the mineral composition in the presence of lime and/or limestone and a soluble alkali complexing agent and in the presence of an oxygen containing gas at a pH in the range of from 3.5 to 6.

Provided is an ore crushing method capable of efficiently crushing iron ores that are difficult to finely crush. The ore crushing method includes coarsely crushing the iron ores to reduce the proportion of particles with a particle size of greater than or equal to 1 mm, and then finely crushing the iron ores to increase the proportion of particles with a particle size of less than 63 ?m. The average pore size of the iron ores is preferably less than or equal to 10 ?m, the proportion of the particles with a particle size of greater than or equal to 1 mm in the iron ores is preferably greater than or equal to 30 mass %, the iron ores are preferably coarsely crushed so that the proportion of the particles with a particle size of greater than or equal to 1 mm becomes less than or equal to 20 mass %, the iron ores are preferably finely crushed so that the proportion of the particles with a particle size of less than 63 ?m becomes greater than or equal to 70 mass %, and the iron ores are preferably finely crushed with a wet ball mill. A pellet production method is also provided that includes granulating a raw material, which includes the iron ores crushed with the ore crushing method, into pellets.

The present invention relates to a method of simultaneously recovering cobalt (Co) and manganese (Mn) from lithium-based BATTERY, and more particularly, to a method that is capable of simultaneously recovering cobalt and manganese from lithium-based BATTERY, i.e., recycled resources that contain large amounts of cobalt and manganese, with high purities using multistage leaching and electrowinning methods. According to the method of the present invention, cobalt and manganese can be simultaneously recovered from lithium-based BATTERY as recycled resources, and a recovery method that is cost-effective compared to conventional methods can be provided.

A method and a device for producing granulates (1) which are obtained by the method steps: intensively mixing raw materials (2) and optionally additives (6) by adding water (3) to form a mixture (4); introducing the mixture (4) and optional additives (6) into a granulator (11); granulating the mixture (4) by adding water (3) to form raw granulates (12); introducing the raw granulates (12), water (3) and optional additives (6) into a rolling drum (17) and rolling the raw granulates (12) to form the granulates (1).

This invention relates to a process for recovering valuable metals from ore with significantly reduced water consumption through the discrete treatment and storage of coarse tailings. Ore is ground to produce a coarse particulate ore. The coarse particulate ore is treated in a coarse flotation stage to produce a low grade concentrate fraction and a coarse tailings fraction. The low grade concentrate fraction is treated to produce fine tailings and a saleable concentrate. The coarse tailings are treated separately from the fine tailings and water is recovered from the coarse tailings by hydraulically stacking; filtering or screening, whereafter the coarse tailings are dry stacked, without being recombined with the fine tailings.

This invention relates to a process for recovering valuable metals from ore with significantly reduced water consumption through the discrete treatment and storage of coarse tailings. Ore is ground to produce a coarse particulate ore. The coarse particulate ore is treated in a coarse flotation stage to produce a low grade concentrate fraction and a coarse tailings fraction. The low grade concentrate fraction is treated to produce fine tailings and a saleable concentrate. The coarse tailings are treated separately from the fine tailings and water is recovered from the coarse tailings by hydraulically stacking; filtering or screening, whereafter the coarse tailings are dry stacked, without being recombined with the fine tailings.

An agglomerated ore that is a molded product obtained by mixing a plurality of types of particles, wherein the plurality of types of particles includes at least iron carbide particles and iron oxide particles, wherein at least some of the iron oxide particles are exposed on a surface layer of the agglomerated ore, wherein the porosity of the agglomerated ore is 20% or more and 40% or less, wherein the ratio of the total mass of metallic iron and iron in iron carbide to the mass of total iron contained in the agglomerated ore is 40 mass % or more and 80 mass % or less, and wherein the concentration of carbon including carbon in the iron carbide particles is 1.0 mass % or more and 4.5 mass % or less.

The present disclosure relates to the use of a wetting agent such as a non-ionic wetting agent and a reagent comprising a thiocarbonyl functional group, for example, in a method/process or use for extracting a base metal such as copper from a material comprising the base metal. Such methods/processes can comprise contacting the material under acidic conditions with the wetting agent and the reagent comprising the thiocarbonyl functional group; and optionally recovering the base metal.

In one embodiment, the invention provides a leaching method using a support made of a polypropylene material to form agglomerates with a metal bearing material or mineral concentrates.