In embodiments, pressurized fluid containing reagents of formulated mixtures of solids, liquids and gasses are delivered into a cased well then into the heap or pile to open or stimulate new horizontal and vertical fluid pathways, channels, plus drains from the open bottom of the well to the bottom of the heap or pile for fluid collection. This delivery method may also drain any fluids that are retained and pooled in the heap or pile. The removal of pooled fluids will increase the inter-particle cohesion and friction in the heap or pile, thus adding geotechnical stability and resistance to movement of the heap or pile. The cased wells may also add shear strength to the collective to retard movement of the heap or pile.

A method of processing a gold-containing ore that contains reactive sulphide minerals that includes selecting processing conditions to optimize liberating gold in reactive sulphide minerals and processing the ore in accordance with the selected processing conditions and liberating gold in the reactive sulphide minerals. In other words, when there are reactive sulphide minerals and “barren” minerals in an ore, the invention focuses on liberating gold in the reactive sulphide minerals only.

A method of processing a gold-containing ore that contains reactive sulphide minerals that includes selecting processing conditions to optimize liberating gold in reactive sulphide minerals and processing the ore in accordance with the selected processing conditions and liberating gold in the reactive sulphide minerals. In other words, when there are reactive sulphide minerals and “barren” minerals in an ore, the invention focuses on liberating gold in the reactive sulphide minerals only.

The present disclosure relates to a method for treating an electromembrane process aqueous composition comprising sodium and/or potassium sulfate, said process comprising removing water from said electromembrane process aqueous composition under conditions suitable for substantially selectively precipitating sodium and/or potassium sulfate monohydrate.

The present disclosure relates to a method for treating an electromembrane process aqueous composition comprising sodium and/or potassium sulfate, said process comprising removing water from said electromembrane process aqueous composition under conditions suitable for substantially selectively precipitating sodium and/or potassium sulfate monohydrate.

An ore volume-based zonal injection method for ionic rare earth includes six steps of ore body data acquisition; ore volume calculation by units; calculation of leaching agent consumption γ per unit ore volume; calculation of unit ore volume-based zoning range difference; merging of the units into injection zones; and injection.

The present invention relates to the recovery of metals from raw ores or concentrates, and more specifically, to the recovery of rare earth elements, or oxides or salts thereof, from ores containing bastnaesite carbonatite, and/or monazite. The ore is processed by a method that may include one or more of the following steps: (i) mechanically processing the ore; (ii) calcination and/or roasting of the ore to form a calcinated material and/or roasting of the ore to form a roasted material; (iii) leaching of the calcinated material or roasted material in an aqueous solution; (iv) solid/liquid separation to remove a solid residue from the aqueous solution to recover a rare earth element solution; and (v) precipitation of the rare earth element solution to isolate a rare earth element, or oxide or salt thereof.

The present invention relates to the recovery of metals from raw ores or concentrates, and more specifically, to the recovery of rare earth elements, or oxides or salts thereof, from ores containing bastnaesite carbonatite, and/or monazite. The ore is processed by a method that may include one or more of the following steps: (i) mechanically processing the ore; (ii) calcination and/or roasting of the ore to form a calcinated material and/or roasting of the ore to form a roasted material; (iii) leaching of the calcinated material or roasted material in an aqueous solution; (iv) solid/liquid separation to remove a solid residue from the aqueous solution to recover a rare earth element solution; and (v) precipitation of the rare earth element solution to isolate a rare earth element, or oxide or salt thereof.

Provided is a method for recovering lithium, for recovering lithium from a lithium ion secondary battery, the method including: a thermal treatment step of thermally treating a lithium ion secondary battery having a residual voltage higher than or equal to 80% of a rated voltage, to obtain a thermally treated product; a pulverizing step of pulverizing the thermally treated product, to obtain a pulverized product; and a lithium recovering step of recovering lithium from the pulverized product.

Provided is a method for recovering lithium, for recovering lithium from a lithium ion secondary battery, the method including: a thermal treatment step of thermally treating a lithium ion secondary battery having a residual voltage higher than or equal to 80% of a rated voltage, to obtain a thermally treated product; a pulverizing step of pulverizing the thermally treated product, to obtain a pulverized product; and a lithium recovering step of recovering lithium from the pulverized product.