485results about How to "Improve flotation effect" patented technology

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.

The invention discloses a novel lepidolite flotation method including primary rough selection, secondary fine selection and secondary scavenging. During the flotation, sodium silicate is added as an inhibitor with the amount ranging from 1400g/t to 1900g/t; an anionic collector is sodium oleate or oxyparaffin soap 731 with the amount ranging from 480g/t to 700g/t; and a cationic collector is dodecylamine or coconut oil amine with the amount ranging from 130g/t to 160g/t. The adding sequence of collectors is the anionic collector first and the cationic collector second, or the anionic collector and the cationic collector are added together. By the method, the lepidolite is selected through the combination of the anionic and the cationic, good flotation effect can be realized, flotation efficiency is high, and meanwhile, the synergistic effect is generated between the anionic collector and the cationic collector, and results from joint action of three mechanisms of coadsorption, charge compensation and function complementation.

A deinking method comprising the steps of liberating ink from waste paper as a raw material and removing the liberated ink from a flotation system, wherein a nonionic surfactant, e.g., a reaction product obtained by adding an alkylene oxide to a mixture of an oil & fat and an alcohol, an alkylene oxide adduct of a fatty acid, or an alkylene oxide adduct of a higher alcohol, is used for the liberation of ink, and the flotation step is effected in the presence of a cationic compound, an amine, an acid salt of an amine or an amphoteric compound at a pH of from 4 to 9, provides a high quality deinked pulp having a high whiteness and a little residual ink spots.

Coal fines are processed by flotation separation to separate coal particles from ash-forming component particles. Coal fines are mixed water under high shear mixing conditions to form an aqueous slurry of coal fines containing between 15 wt. % and 55 wt. % coal fines. The aqueous slurry is introduced into a coal flotation cell to separate coal particles from ash-forming component particles by flotation separation, wherein the coal fines have a particle size less than 500 μm, and more preferably less than 300 μm. Bubbles are generated in the coal flotation cell having a bubble size and bubble quantity selected to float the coal particles and to form a coal-froth containing at least 15 wt. % solid particles. The solid particles include coal particles and ash-forming component particles. The coal-froth is collected for further processing.

A molded foam pool chair (12) is provided by a continuous form (26) of pliable foam material of constant density having varying thicknesses to provide a rigid base portion (30) and an elastic seat portion (28). The rigid base portion (30) extends around and is continuous with the elastic seat portion (28). The rigid base portion (30) defines a peripheral edge (44) having a shape and has cross-sectional areas of sufficient thickness and width to prevent substantial distortion of the shape of the peripheral edge (44) between unloaded and loaded conditions. The elastic seat portion (28) has an upper surface (62), a lower surface (64) and a thickness (48) for receiving a substantial portion of the weight of a person and extending downward within water into a loaded position (68), such that the upper surface (62) of the elastic seat portion (28) when in the loaded position (68), is disposed substantially beneath an unloaded seat position (66) defined by the lower surface (64) when disposed in an unloaded position.

The invention relates to a novel flotation column serial connection test system for improving the flotation granularity upper limit. The equipment of the system comprises a fed material stirring barrel, a feeding pump, a feeding pressure meter, a froth generator, a primary-section foam enriching chamber, a lower catheter, a spray type flotation column chamber, a primary-section tailing box, a secondary-section foam enriching chamber, a column flotation chamber, a rotary flow sorting chamber, a circulation ore pulp pump, a circulation pressure meter, a froth generator, a secondary-section tailing box and an FCMC cyclo-microfroth flotation column, wherein a spray type flotation column and the FCMC cyclo-microfroth flotation column are connected in series by the system, and the primary-section tailing is used as secondary-section fed materials. The system is favorable for the static fast flotation of preference flotation of coal with good flotation performance and the strong power efficient recovery of difficult-to-sort coal, in addition, the problem of high-concentration coal slime flotation can be perfectly solved, the recovery rate of coarse particle coal slime can be improved, and the problem of coarse particle running of coarse particle flotation can be solved.

The invention provides an ore dressing method for lead-zinc-silver poly-metallic ores. Lead-silver concentrates and zinc concentrates are finally obtained through the steps of raw ore grinding, lead fast roughing, lead slow roughing, lead scavenging, lead fast concentration, lead slow concentration, zinc fast roughing, zinc slow roughing, zinc scavenging, zinc fast concentration and zinc slow concentration. The lead-zinc-silver poly-metallic ores sorted by the ore dressing method provided by the invention are good in sorting index and high in separation efficiency; the ore dressing method is a lead-zinc-silver ore dressing method which is stable, efficient, strong in adaptive capacity, good in sorting effect, high in comprehensive recovery index and low in production cost and is suitable for popularization and application.

A personal watercraft including a hull and at least two pontoons repositionably attached to the hull with at least one pontoon attached proximate the starboard side and at least one pontoon attached proximate the port side. The pontoons are laterally and longitudinally repositionable as between a storage position in which the pontoons are generally longitudinally aligned relative to the hull and have a minimized lateral distance between the pontoons, and a flotation position in which the pontoons are shifted aft relative to the longitudinally aligned storage position and have a maximized lateral distance between the pontoons.

Also, a personal watercraft having one or both of (i) a pair of laterally spaced hitch attachments secured to the hull proximate the bow of the hull, and/or (ii) a pair of laterally spaced hitch attachments secured to the hull proximate the stern of the hull 20. This aspect of the personal watercraft permits the personal watercraft to be used with various accessories such as a towing attachment, a wheeled attachment, a transom, an interconnecting linkage and a supplemental decking attachment.

A camera or other items positioning device including a relatively hard endoskeleton substantially covered by a softer corpulent body. A mount region is coupled to the endoskeleton and configured to permit the releasable attachment of a camera or other device. The attachment mechanism may be mechanically or magnetically based, or both. The soft body permits the devices to be readily grasped by a user and to wrap securely about mounting structures of different size and shape. Several embodiments, including tripod, extra leg and monopod embodiments, are disclosed.

The invention relates to a flotation column special for floating fine flake graphite, belonging to the technical field of graphite flotation; the flotation column disclosed by the invention is mainly composed of a mixing device, a static mineralizing machine, an upper column body, a scraping device, a distributor, a lower column body, a gangue discharging device, a middle column body, a dosing device and a PLC (programmable logic controller) control case; the mixing device is composed of a mixing pipe, a nozzle, a throat pipe and an expanding pipe; the static mineralizing machine is composed of a case body, a variable-diameter amplifier, a baffle board, an uniform distribution board and a discharging pipe; the upper column body is composed of an upper barrel body, a finished ore groove and a static charging device; the scraping device is composed of a motor, a decelerator, an output shaft and a scraper; and the distributor is composed of a distributing pipe, an electric valve, an electric contact pressure gauge, a circular pump and a micro-bubble generator. According to the invention, the flotation column has the advantages of good raw ore and medicament mineralizing effect, small charging kinetic energy, large cyclone force field, good flotation effect and large treatment quantity.

The invention discloses a composite coal-dressing flotation reagent and a preparation method of the composite coal-dressing flotation reagent. The composite coal-dressing flotation reagent is an ivory water-soluble composite coal-dressing flotation reagent which is formed in the mode that light diesel oil, lauryl sodium sulfate, alkyl glycoside, alkylphenol polyoxyethylene ether and water are mixed and subjected to emulsification treatment through a low-temperature emulsification technology. The preparation method of the composite coal-dressing flotation reagent is simple, sources of raw materials are wide, complex operation is avoided, and industrialization can be easily achieved. The composite coal-dressing flotation reagent is used for conducting flotation processing on fine-grained coal slime; compared with a single flotation reagent combination composed of alkyl glycoside and light diesel oil which are added step by step, the composite coal-dressing flotation reagent shows an enhanced coal-dressing flotation effect on fine coal with the granularity smaller than 0.5 mm and overcomes the defect that the reagent is added step by step, the dosage of the reagent is reduced, and the economic benefit is considerable.

The invention relates to a coal flotation agent and a preparation method thereof. The product can be obtained through the following steps: mixing 10 to 30 portions of aromatic, 10 to 15 portions of kerosene, 0.05 to 1 portions of alkyl phenol polyoxyethylene ether in proportion; stirring for 20 to 40 minutes at a normal temperature; further adding 60 to 80 portions of gas-oil; and further stirring for 15 to 30 minutes to obtain a finished product. The coal flotation agent of the invention has the advantages of excellent flotation performance, low usage, high clean coal yield, low consumption, easy purchase of raw materials and low cost.

The invention relates to a method for the floatation of potassium chloride in a sylvite mine, and a method for producing the product of chemical industry, in particular to a novel floatation method for extracting the potassium chloride from the sylvite mine. The method of the invention mainly comprises the following steps: a. the sylvite mine is pulverized and graded, the particle size of the pulverized mine rages from 3 to 8mm, and the pulverized mine is processed by the operation of cooling decomposition by being added with sweet water; b. mine slurry obtained in the step a is led into a mineralization slot and is added with the saturated mother solution of potassium chloride, sodium chloride and magnesium chloride as well as a positive floating agent; and the mine slurry, the saturated mother solution and the positive floating agent are completely mixed to control the concentration of the mine slurry to be from 20 to 40 percent; c. the mine slurry obtained in the step b is led into a flotation separation device to obtain the potassium chloride by the positive floatation; and d. particles fallen to the bottom of a flotation column are milltailings, particles which are discharged from the flotation column and are caused to float to the top end of the flotation column are potassium chloride particles, and the particles are collected to be concentrated, filtered and dried. The method has the advantages of simple and stable process, easier automatic control, favorable flotation effect, low agent consumption and production cost, etc.

The invention discloses a multifunctional ore dressing chemical, and a using technique thereof. The chemical can be widely used for treating various ore resources. A synthesis method of the multifunctional ore dressing chemical comprises the following steps: preparing colloidal solution of an inorganic oxide and a hydroxide; dissolving an organic monomer in the colloidal solution of the inorganicoxide and the hydroxide; adding an initiator into the solution to complete organic synthesis a reaction kettle. The obtained multifunctional ore dressing chemical which has a selective flocculation function is added into the flotation pulp to help ore separation in ore flotation and solid-liquid separation in tailing processing. The using technique comprises: the flotation and tailing processing.The multifunctional ore dressing chemical also can be used in tailing processing alone. The multifunctional ore dressing chemical can improve production efficiency, improve mine environmental protection, greatly improve the economic benefits of the mine, improve the return water recovery effect and reduce mine environment pollution.

The invention discloses an activating agent for flotation of copper-nickel sulfide ores.The activating agent is prepared from a component A and a component B, wherein the component A is copper salt or nickel salt, and the component B is amine, ammonia or ammonium salt.Compared with an existing activating agent for flotation of copper-nickel sulfide ores, the activating agent for flotation of the copper-nickel sulfide ores can remarkably improve the flotation and recovery rate and grade of the nickel-copper the copper-nickel sulfide ores, a good flotation effect can be obtained within the ore pulp pH value range of 7-11, the activating agent adapts to the complicated and volatile ore pulp conditions of industrial flotation, raw materials are cheap and easy to obtain, no harmful gas nor volatile substance is discharged after the activating agent is added into a flotation system, and the activating agent is green, is environmentally friendly, is harmless to the body of an operator and does not corrode flotation equipment.

The invention provides a beneficiation method for a high-carbon molybdenum nickel ore, which adopts floatation decarbonization so as to eliminate the influence of high-content carbon substances on subsequent nickel floatation. Furthermore, the beneficiation process adopts sieve classification with jigging and tail throwing so as to enhance the floatation and selected grade, then rough concentrates are selected again and treated by floatation after being ground, and the ore concentrates are selected again with tail throwing to enhance the floatation and selected grade without ore grinding. The invention can greatly reduce the floatation quantity, has good beneficiation index and provides a new way for developing a low-grade high-carbon molybdenum nickel ore.

Unburned carbon is efficiently removed from fly ash, and effective utilization of the fly ash and removed unburned carbon is attained. Water is added to fly ash to thereby obtain a slurry. A collector is added to the slurry, and shearing force is applied to the slurry and collector to thereby attain a surface modification. The mixture is subjected to flotation operation at which unburned carbon of fly ash is attached to froths and surfaced. The application of shearing force to the slurry and collector can be carried out by means of a submerged agitator whereby an agitation power of 0.7 to 10 kWh/m³ is applied per unit quantity of slurry. The fly ash concentration of the slurry is in the range of 3 to 50 wt. %, and the amount of collector added is in the range of 5 to 100 wt. % based on the amount of unburned carbon of fly ash. The unburned carbon separated by flotation can be used as fuel, and the fly ash (product) having its unburned carbon content reduced to 1 wt. % or below can be used as a cement mixing material or a raw material for production of lightweight aggregate.

The invention discloses a selection method of lead and zinc sulfide ore, and belongs to the technical field of beneficiation. The selection method comprises the steps of milling of raw ore, flotationof lead and flotation of zinc, wherein during rough flotation of lead, lime, calcium hypochlorite, zinc sulfate, sodium sulfite, sodium sulfide, dimethyl dicarbonate, ethyl thio carbamate, sodium n-butylxanthate, dianilinodithiophosphoric acid, diphenyl amino phosphorodithioic acid and sodium carbonate are added; during fine flotation of lead, lime, zinc sulfate, sodium sulfite and sodium sulfideare added; during scavenging of lead, lime, calcium hypochlorite, zinc sulfate, sodium sulfite, sodium sulfide, dimethyl dicarbonate, ethyl thio carbamate, dianilinodithiophosphoric acid, diphenyl amino phosphorodithioic acid and sodium carbonate are added; during rough flotation of zinc, lime, copper sulfate, ammonium sulfite, sodium n-butylxanthate and terpenic oil are added; during fine flotation of zinc, lime is added; and during scavenging of zinc, lime, copper sulfate, ammonium sulfite, sodium n-butylxanthate and terpenic oil are added. By adoption of the selection method of lead and zinc sulfide ore, the problem that when a traditional flotation method is used for selecting lead and zinc sulfide ore, the recovery rate of lead and zinc is low is solved.

The invention relates to a preparation method, application and using process of a floating agent prepared from drainage oil, wherein the preparation method of the floating agent comprises the following steps of: (a) purifying the drainage oil; (b) carrying out hydrolysis reaction on the purified drainage oil obtained from the step (a) to obtain the floating agent used for floating ores. When the floating agent used by the invention and prepared from the drainage oil is used as a collecting agent for floating the ores, the selectivity of the collecting agent can be enhanced, and the technical indicator and the economic indicator of flotation are enhanced favorably; and in addition, because a raw material used for the preparation of the floating agent is the drainage oil, the technical scheme provided by the invention has important significance on the aspects of preventing environmental pollution, simplifying production process, reducing food security threat, and the like.

The invention provides a zinc oxide ore floatation agent. The zinc oxide ore floatation agent comprises a collecting agent, a foaming agent and an emulsifying agent, wherein the mass ratio of the foaming agent to the collecting agent is 1:6-1:1, and the mass ratio of the emulsifying agent to the collecting agent is 1:6-1:1. A preparation method comprises the steps that (1) the foaming agent is added into the collecting agent, dissolved at the temperature of 25-80 DEG C and stirred evenly, and the mass ratio of the foaming agent to the collecting agent is 1:6-1:1; (2) an appropriate amount of water is added into the mixture evenly mixed in the first step to obtain a solution with the mass concentration being 0.1-10%; and (3) the emulsifying agent is added to the solution obtained in the second step, so that the collecting agent and the foaming agent are fully emulsified in the aqueous solution, and the mass ratio of the emulsifying agent to the collecting agent is 1:6-1:1. The floatation agent has the advantages of being good in floatation effect and water solubility, high in dispersing capacity, low in cost, high in recovery rate and the like.

The present invention relates to floatation equipment for separating non-ferrous metal mineral, ferrous metal mineral and non-metal mineral, and is especially foam pushing device for large floatation machine. The foam pushing device is one double foam pushing cone structure comprising an inner foam pushing cone, an inner foam channel, outer foam pushing cone and outer foam channel. The foam pushing device separates the foams inside the floatation tank into two parts, the marginal part exhausted through the outer foam channel and the middle part exhausted through the inner foam channel, and the shortened foam conveying distance ensures the fluent exhaustion of floatation foam and is favorable to the floatation process.