The invention relates to a method for drying salts with a water of crystallisation content in convective apparatuses that can additionally be indirectly heated. The invention is primarily characterised in that the drying process takes place with a moisture content of the drying gas above a determined level. The gas surrounding the salt particles during the drying process therefore has a specific humidity. In this way, the rate of drying is positively influenced.

The invention relates to a method for drying salts with a water of crystallisation content in convective apparatuses that can additionally be indirectly heated. The invention is primarily characterised in that the drying process takes place with a moisture content of the drying gas above a determined level. The gas surrounding the salt particles during the drying process therefore has a specific humidity. In this way, the rate of drying is positively influenced.

The invention relates to a method for drying salts with a water of crystallisation content in convective apparatuses that can additionally be indirectly heated. The invention is primarily characterised in that the drying process takes place with a moisture content of the drying gas above a determined level. The gas surrounding the salt particles during the drying process therefore has a specific humidity. In this way, the rate of drying is positively influenced.

The invention relates to a method for drying salts with a water of crystallisation content in convective apparatuses that can additionally be indirectly heated. The invention is primarily characterised in that the drying process takes place with a moisture content of the drying gas above a determined level. The gas surrounding the salt particles during the drying process therefore has a specific humidity. In this way, the rate of drying is positively influenced.

A method for increasing the evaporation rate of an evaporative pond containing pond liquor comprising water and at least 1% by weight of sodium carbonate, said evaporative pond being in contact with an ambient air at an ambient air temperature of more than 0 C., the method comprising the following steps: feeding part of the pond liquor to a heat exchanger; heating the pond liquor in the heat exchanger with heat and producing a heated pond liquor; feeding the heated pond liquor into a spraying device at an operating temperature of at least 10 C. above the ambient air temperature; and spraying the heated pond liquor into an open area of the evaporative pond with the spraying device, so as to evaporate at least part of the water of the pond liquor when sprayed.

A method for increasing the evaporation rate of an evaporative pond containing pond liquor comprising water and at least 1% by weight of sodium carbonate, said evaporative pond being in contact with an ambient air at an ambient air temperature of more than 0 C., the method comprising the following steps: feeding part of the pond liquor to a heat exchanger; heating the pond liquor in the heat exchanger with heat and producing a heated pond liquor; feeding the heated pond liquor into a spraying device at an operating temperature of at least 10 C. above the ambient air temperature; and spraying the heated pond liquor into an open area of the evaporative pond with the spraying device, so as to evaporate at least part of the water of the pond liquor when sprayed.

A process for the recovery of sodium sulfate from water, in particular from water deriving from a silica manufacturing process.

A process for the recovery of sodium sulfate from water, in particular from water deriving from a silica manufacturing process.

A process for water removal and/or recycling of sodium sulfate and/or sodium dithionate containing liquors derived from processing cobalt resource material essentially free of lithium comprising the steps of precipitation of cobalt as cobaltous carbonate or cobaltous hydroxide followed by removal thereof from the liquor, crystallization of sodium sulfate and sodium dithionate and removal of the crystals, followed by heating of the crystals to anhydrous sodium sulfate, sulphur dioxide and water and then separating the anhydrous sodium sulfate.

Process of materials recovery from energy storage devices, wherein the process comprises cleaning, washing, deep discharging and then crushing the devices to recover floating non-magnetic materials and magnetic materials. Further the black mass is treated with baking process, water soaking process, gravity filtration process, leaching process, Cobalt salt recovery process, Manganese salt recovery process, Nickel salt recovery process, Sodium salt recovery process, Lithium salt recovery process and then selective absorption of respective ions using Ion-exchange resin and liquid-liquid extraction using organic solvent for beneficiation to recover pure Cobalt ions, Manganese ions, Nickel ions and Lithium ions. Further the process of the present invention facilitates in recovering all possible battery grade materials from used energy storage devices. The process of the present invention uses less water, energy, economical, safe, environment friendly without generating any hazardous gases while the process has very low carbon foot prints.