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8668results about "Flotation" patented technology

Dissimilar materials sorting process, system and apparata

An automated system for sorting dissimilar materials, and in particular for sorting plastics from other materials and for sorting different types of plastics from one another comprises, depending upon the embodiment, combinations of a sizing mechanism, a friction separation, an air separator, a magnetic separator, a dielectric sensor sortation bed, shaker screening, a ballistic separator, an inductive sensor sortation system and a float / sink tank. The dielectric sensor sortation system may be either analog or digital, depending upon the particular implementation. One or more float / sink tanks can be used, depending upon the embodiment, each with a media of a different specific gravity. The media may be water, or water plus a compound such as calcium chloride. In addition, multiples of the same general type of module can be used for particular configurations. A heavy media system or a sand float process can be used either alternatively or additionally.
Owner:VALERIO THOMAS A

Beneficiation method for recycling specularite

The invention discloses a benefication method for recovering specularite. The method comprises the processes of primary grinding, grading, primary low intensity magnetic separation, and tailings discarding by primary high intensity magnetic separation; rough concentrate pre-classification by the primary low intensity magnetic separation and the primary high intensity magnetic separation, secondary grinding, secondary low intensity magnetic separation to obtain concentrates, secondary high intensity magnetic separation to obtain concentrates; and selective flocculation desliming secondary conducted on high intensity magnetic separation tailings (middlings), and anionic reverse flotation. The method further comprises the step of arranging a cylindrical slag separating sieve before the primary high intensity magnetic separation. With the advantages that the iron concentrate grade and the iron recovery are high, the loss of granular iron minerals is low, the mineral process flow is short, concentrates and tailings can be obtained in advance and the energy consumption of the benefication is low, the invention can be used not only for selecting specularite ores, but also for selecting weakly magnetic iron minerals, such as hematite, goethite, siderite, limonite, and the like.
Owner:SINOSTEEL MAANSHAN INST OF MINING RES

Treatment process and system for wastewater, process waters, and produced waters applications

A method for the removal of contaminants from a contaminated water stream, by pretreating the contaminated water stream to yield a pretreated water stream, wherein pretreating comprises passing the contaminated water stream to at least one electrocoagulation cell wherein coagulation of contaminants is promoted, yielding an electrocoagulated stream; and separating coagulated contaminants from the electrocoagulated stream.An electrocoagulation reactor comprising a plurality of electrodes positioned parallel to each other and provided with a means of energizing each electrode; a fluid inlet for an inlet stream comprising contaminated water; a fluid outlet for an outlet stream comprising electrocoagulated products; a flow distributor system; and a gas distribution system for injecting a gas into the electrocoagulation reactor. An electrocoagulation system for treating a contaminated water stream, the system comprising at least one electrocoagulation reactor.
Owner:ITS ENGINEERED SYST

Methods for removing heavy metals from water using chemical precipitation and field separation methods

A two-step chemical precipitation process involving hydroxide precipitation and sulfide precipitation combined with “field separation ” technology such as magnetic separation, dissolved air flotation, vortex separation, or expanded plastics flotation, effectively removes chelated and non-chelated heavy metal precipitates and other fine particles from water. In the first-step, the non-chelated heavy metals are precipitated as hydroxides and removed from the water by a conventional liquid/solids separator such as an inclined plate clarifier to remove a large percentage of the dissolved heavy metals. The cleaned water is then treated in a second precipitation step to remove the residual heavy metals to meet discharge limits. In the second precipitation step, any metal precipitant more effective than hydroxide for metal precipitation can be used. The invention improves metal removal, lowers cost because fewer chemicals are used, produces less sludge, and reduces the discharge of toxic metals and metal precipitants to the environment. Magnetic separation is preferred for the separation of particles precipitated in the second stage. Similar methods can be employed for separation of other particulates from water. Particulates can also be removed by causing them to adhere to particles of expanded plastic, forming a floc lighter than water, so that the floc can be removed by flotation.
Owner:CORT CHERYL J

Flotation pillar special for fly ash

The invention relates to a special flotation column of coal fly ash, an ore pulp distributor is arranged at the top part of a cylinder body of the special flotation column, a plurality of layers of bubble plates are arranged in the cylinder body, a multi-point rotary flow device and a multi-point fly ash overflow hole are arranged at the lower part of the cylinder body, an ore pulp distributing pipe is arranged at the periphery of the ore pulp distributor, a circulating pipeline is arranged at the periphery of the cylinder body, the upper end of the circulating pipeline is connected and communicates with the ore pulp distributing pipe, the lower end is connected and communicates with the rotary flow device, an interface of the ore pulp distributing pipe and a feed and discharge port are respectively connected with the both ends of a circulating pump, a high carbon ash balance overflow plate and a high carbon ash overflow collection port are further arranged at the upper part of the flotation column, and the fly ash overflow hole is provided with a fly ash automatic regulation box by the connection of the pipeline. The special flotation column is applicable to various requirements, the decarburization effect is good, the continuous operation is stable and reliable, the quality of fine coal is high and the processing ability is great, thus saving energy, increasing efficiency and saving investment.
Owner:贵州安顺惠海粉煤灰开发有限公司
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