The present invention relates to apparatus for simultaneous grinding and froth flotation of at least one crude mineral and/or pigment, a process carried out in the apparatus for manufacturing at least one ground mineral and/or pigment, use of the ground mineral and/or pigment bearing phase obtainable by the process in paper applications as well as in paper, plastics, paints, coatings, adhesives, sealants, food, feed, pharma, concrete, cement, cosmetic, water treatment and/or agriculture applications, preferably in a wet end process of paper machine, in cigarette paper, board, and/or coating applications, or as support for rotogravure and/or offset and/or ink jet printing and/or continuous ink jet printing and/or flexography and/or electrophotography and/or decoration surfaces and the ground mineral and/or pigment bearing phase or ground mineral and/or pigment obtainable by the process.

A washing treatment system for contaminated soil, including: a classifier that is configured to obtain a sand fraction having a particle size within a predetermined range and a fine-grained fraction having a particle size smaller than the predetermined range, from contaminated soil containing one or more contaminants selected from dioxins and agricultural chemicals; a detaching/washing unit that is configured to detach a contaminant particle containing the from a surface of the sand fraction; a removal unit that is configured to generate air bubbles in a presence of water containing a flotation chemical, allows the detached contaminant-bearing particles to attach to the air bubbles to form froth, and removes the froth to obtain a first slurry containing primary purified soil; and an up-flow washing unit that is provided downstream of the removal unit, and is configured to supply the first slurry into up-flow water to purify the primary purified soil.

Described herein are methods of reducing the viscosity of products of sulfide ore froth flotation. A froth overflow, or an underflow of sulfide ore flotation is treated using a nonionic compound to reduce the viscosity of a froth or an underflow. The lowered viscosity imparts several benefits in sulfide ore processing of copper and molybdenum metal products, including increased rate of sedimentation to yield a concentrated product.

A plurality of collection surfaces for use in an aqueous slurry has a polymeric coating to provide a compliant and sticky surface. The polymer coating has a chemical to render the surface hydrophobic so as to attract hydrophobic or hydrophobized mineral particles in the slurry. The substrate can take the form of a conveyor belt, a bead, a mesh, an impeller, a filter or a flat surface. The substrate can also be an open-cell foam. The collection surfaces having the mineral particles attached thereon are caused to interact with liquid and supercritical carbon dioxide so that the mineral particles can be stripped from the collection surfaces.

“VINASSE TREATMENT PROCESS BY FLOTATION IN FLOW”, more precisely, it is a vinasse treatment process, by high performance flowing flotation system in industrial plants' facilities, resulting in obtaining concentrated vinasse sludge and treated vinasse, being said process comprised by vinasse treatment, which consists of treatment steps performed inside flotation tank, which comprises succession of coagulation systems and basins, flocculation, combined with aeration and oxygenation, in addition to a system of nano and micro bubbles in flotation basin, in which vinasse naturally flows into its storage tank, being said process results in formation of surface sludge and treated vinasse.

The present disclosure relates to a method for recovering gold in a cyanide tailing by hierarchical ramified flotation. The present disclosure divides a cyanide tailing into coarse and fine-grained products through screen classification, making preparation for hierarchical ramified flotation. The present disclosure then conducts flotation of the coarse and fine-grained products with suitable process parameters and reagent systems, and selects a suitable coarse-grained flotation product as a carrier of fine-grained flotation to maximize the recovery efficiency of fine grains. The present disclosure improves the overall recovery rate of gold with the hierarchical ramified flotation of coarse and fine grains, series-carrier flotation and combined reagent enhanced flotation. The present disclosure has an advanced process, a good separation effect, and can effectively recover fine-grained gold in the cyanide tailing.

Disclosed herein are systems and methods from processing flue gas desulfurization (FGD) gypsum feedstock and ash feedstocks, either separately or together. FGD gypsum conversion comprises reacting FGD gypsum (calcium sulfate) feedstock or phosphogypsum, in either batch or continuous mode, with ammonium carbonate reagent to produce commercial products comprising ammonium sulfate and calcium carbonate. A process to separate the impurities and convert the calcium carbonate to a pure precipitated calcium carbonate is disclosed. These impurities include a concentrate of valuable Rare Earth Elements, and radioactive thorium and uranium. A process to convert calcium sulfite to calcium sulfate using oxygen and a catalyst is also disclosed. Ash conversion comprises a leach process followed by a sequential precipitation process to selectively precipitate products at predetermined pHs resulting in metal hydroxides which may be converted to oxides or carbonates. The processes may be controlled by use of one or more processors.

A granular litter cleaning apparatus comprises a separation system having a separation tank adapted to receive a mixture of granules and plastic litter, and water therein, the separation tank having a top opening, and a closeable bottom outlet, and at least one water inlet for feeding water to the separation tank. A collect subsystem is for conveying a mixture of granules and plastic litter to the separation tank. A pump system is in fluid communication with the water inlet. The pump system is operated to raise a level of water in the separation tank to skim water with plastic litter out through the top opening of the separation tank. The closeable bottom outlet is openable to empty the separation tank from granules decanted in a bottom of the separation tank. A process for separating plastic litter from granules is also provided.

A plurality of collection surfaces for use in an aqueous slurry has a polymeric coating to provide a compliant and sticky surface. The polymer coating has a chemical to render the surface hydrophobic so as to attract hydrophobic or hydrophobized mineral particles in the slurry. The substrate can take the form of a conveyor belt, a bead, a mesh, an impeller, a filter or a flat surface. The substrate can also be an open-cell foam. The collection surfaces having the mineral particles attached thereon are caused to interact with liquid and supercritical carbon dioxide so that the mineral particles can be stripped from the collection surfaces.

A hydrocyclone (10) is disclosed which includes an internal conical separation chamber (15) which extends axially from a first end to a second end of relatively smaller cross-sectional area than the first end. The separation chamber (15) includes at least one gas inlet device (60) which comprises a plurality of openings in the form of a series of elongate slits (82) arranged in a spaced-apart relationship from one another around an interior circumferential wall (80) of the gas discharge chamber (74). In use the slits (82) are arranged for admission of gas into the separation chamber (15) at a region located between the first and second ends.