34results about How to "Shorten flotation time" patented technology

The invention relates to an ultrasonic flotation method and a device and application thereof, which comprise the following steps: arranging an ultrasonic device in or outside a floatation tank body, starting the ultrasonic device when the floatation device carries out the mineral floatation, using ultrasonic waves to irradiate floatation pulp, providing a high-energy elastic mechanical wave to the pulp, initiating an ultrasonic cavitation effect, generating a large number of cavitation bubble particle flows which flow at high speed, and effectively washing the surfaces of the ore particles in the pulp to enable target ore particles to expose the fresh surfaces; at the same time, using ultrasonic energy to improve the activity of medicament in the pulp, quickening adsorption process of the medicament and the surfaces of the target ore particles to further improve the effects of breaking, restructuring and floating of mineralized bubbles in a pulp system, and thus realizing the optimization of flotation process.

The invention provides a comprehensive recovery process of intense-weathering poor vanadium titano-magnetite. The comprehensive recovery process of the intense-weathering poor vanadium titano-magnetite comprises the steps of prescreening, crushing, dry separation, primary grinding, primary magnetic separation, secondary grinding, secondary magnetic separation, strong magnetic separation, floating separation and syrup mixing, and titanium floating separation. The process of titanium floating separation comprises the steps of rough separation, scavenging for two times, and fine separation for four times. According to the comprehensive recovery process of the intense-weathering poor vanadium titano-magnetite, the problems that a throwing tail is high in grade and recovery rate of titanium concentrate is low when an existing process and an existing device are used for processing the intense-weathering poor vanadium titano-magnetite are solved. The index of finished products based on the comprehensive recovery process is that the grade of iron ore concentrate is 64% and yield of the iron ore concentrate is 37%, the grade of the titanium concentrate is 42% and the yield of the titanium concentrate is 41%, and the grade of fine-grain gangue iron is lower than 7% and the grade of titanium is lower than 1%.

The invention relates to the field of ilmenite separation, in particular to a process for recycling ilmenite from a raw ore through magnetic separation. The technical problem to be solved is to provide an ilmenite recycling process with high recovery rate. The technical scheme for solving the technical problem is to provide the process for recycling the ilmenite through two stages of high-gradient magnetic separation. The process comprises the following steps: performing primary high-gradient magnetic separation on the raw ores after a preparation operation to obtain a primary high-gradient magnetic concentrate; and performing secondary high-gradient magnetic separation on the primary high-gradient magnetic concentrate after the preparation operation to obtain a secondary high-gradient magnetic concentrate. The process can be applied in the field of the ilmenite separation, improves the recovery rate of titanium and reduces production cost.

The invention relates to a composite beneficiation reagent for extracting vanadium from stone coal. The composite beneficiation reagent for extracting the vanadium from the stone coal is characterized in that the composite beneficiation reagent is composed of a component A, a component B, a component C, a component D and water, the component A is kerosene and/ or diesel oil, the component B is quaternary ammonium salt class matter and/ or aliphatic amine hydrochloride class matter, the component C is any one or more of alcohol ranging from C4 to C8, 4-methyl-cyclohexyl-methanol, MIBC, terpenic oil, methyl triisopropoxy silane, and the component D is any one or more of alkyl-sulfonate ranging from C8 to C12, OP-10 and Tween-60. The composite beneficiation reagent for extracting the vanadium from the stone coal is prepared by a plurality of components according to a certain proportion and a rule, combination of the components of the reagent can be adjusted according to different mineral properties so that a series of flotation reagents can be prepared, and thebest use effect is achieved.

The invention relates to a micro-fine fine particle hematite greater circulation mine returning negative ion reverse flotation technology. The technology is characterized in that magnetic concentrate with the Fe-grade being 40-41% and the granularity being P80=20-30 micrometers is fed into a thickener to be subjected to concentration after magnetic separation, then is fed to a negative ion reverse flotation operating system in an underflow mode and then is fed into circulating water in an overflow mode. Firstly, the magnetic concentrate is fed into flotation rough concentration operation, underflow concentrate of the flotation rough concentration operation is fed into flotation fine concentration operation, foam tailings of the flotation rough concentration operation is fed into scavenging operation, and the scavenging operation is divided into three times of scavenging operation; foam tailings of the first time scavenging is fed into the second time scavenging, foam tailings of the second time scavenging is fed into the third time scavenging, underflows of the first time scavenging and the second time scavenging both return to the flotation rough concentration operation, and the underflow concentrate of the third time scavenging operation returns to the first time scavenging. The foam tailings scavenged by the third time scavenging operation are the final flotation tailings, the underflow concentrate of the flotation fine concentration operation is the final concentrate, the grade of the final concentrate is 65.9%, and the iron recovery rate is 88.5%.

The invention is a new technique of flash activation select flotation of Carlin-type gold ore, during the grinding course of Carlin-type gold ore at a 320-eye grinding fineness accounting for 85-90%, preadding sodium carbonate at 1000-2000g/t. as regulating agent, to make golden arsenical pyrite and pyrite able to firstly absorb activating agent sodium carbonate at the first time of dissociating a fresh surface, accelerating floatation of the gold ore and promoting differentiation of medium ore to make total recovery of gold selection reach 81% and the recovery show a net increase of 7-11 percents; at the same time, omitting complex technique of eliminating mud, reducing the loss caused by fine mud containing gold, reducing number of times of finely selection and scan-selection, simplifying technical flow and largely heightening economic benefits.

The invention relates to a mineral separation combination process for recycling pyrite from lead-zinc tailings. The mineral separation combination process comprises step 1, performing mud and sand separation on the lead-zinc tailings through a spiral chute; step 2, performing sulfur flotation on mud and sand which are separated out through the spiral chute; step 3, performing magnetic separation iron extraction on the sand which is separated out through the spiral chute through the tailings after the sulfur flotation, performing flotation desulfurization on rough concentrate obtained through magnetic separation and achieving the recycling of the pyrite in the lead-zinc tailings. The sulfur grade in obtained mixed sulfur concentrate is larger than 31%; the iron grade in iron concentrate is larger than 64% and the sulfur content is smaller than 0.5%; the sulfur recovery rate in the lead-zinc tailings is as high as 95% and the iron recovery rate in the lead-zinc tailings is as high as 88%. According to the mineral separation combination process for recycling the pyrite from the lead-zinc tailings, the operation is stable, the mineral separation index is high, the comprehensive utilization of resources can be achieved, the pollution to the environment can be reduced, and the good economic benefit can be brought to enterprises.

The invention relates to a flotation method and a flotation system of whole-course open circuit floatation for concentrate slurry. The whole-course open circuit floatation means that the concentrate slurry produced in any flotation tank no longer flows into a flotation system where the flotation tank in which the concentrate slurry is produced is arranged, the concentrate slurry flows into a postpositional flotation system in an irreversible flow manner (i.e. a complete single-way forward flow manner), and a choiceness process is finished in at least one postpositional flotation system. The flotation tank at least comprises a flotation tank provided with spiral rotors and/or an ultrasonic device. The concentrate slurry is slurry flowing out above the liquid level in the flotation tank in a mineralized bubble form. In the flotation process of the flotation method, the tail slurry produced in any flotation tank flows out of the flotation tank in which the tail slurry is produced in the irreversible flow manner and flows into the postpositional flotation system of the flotation system for sequentially scavenging until the tail slurry of the system is produced. The invention can overcome the defect of futile cycle flotation for target particles, the flotation time is greatly shortened, and medicine and energy consumption are significantly reduced.

A controlled dispersing-selective desliming method in the reverse floatation of bauxite features that according to the difference of various components in said bauxite in crushibility and surface characteristics, the sodium carbonate as disperser is added during the grinding step. Its advantages are high grinding efficiency, low consumption of floatating agent, and high Al-Si ratio in ore sludge.

The invention relates to a collecting agent capable of efficiently removing carbonate minerals in collophane. The technology of the collecting agent includes the steps that (1) a saponification reaction is carried out on fatty acid with the content of oleic acid with an 18 carbon chain and linoleic acid with an 18 carbon chain larger than 65%, (2) diethyl 1,2-phenylenediacetic acid with the mass percent ranging from 5% to 25% is added into the saponification product at the temperature ranging from 40 DEG C to 50 DEG C to carry out emulsification, and obtaining the collecting agent capable of efficiently removing the carbonate minerals in the cellophane, and (3) the collecting agent is used for collecting the carbonate minerals in the cellophane in a reverse-flotation mode. Under the condition that the same number of collecting agents are added, and the MgO contents in obtained concentrates are similar, compared with 7-minute-flotation-time fatty acid saponification flotation without adding the diethyl 1,2-phenylenediacetic acid, the floatation time is shortened by more than 36%, and the carbonate-mineral flotation speed is quickened by more than 20%.

The invention discloses an ore grinding grading system and method capable of controlling derichment of iron minerals. The ore grinding grading system comprises a feeding pulp tank, a feeding pump, a double-overflow-pipe swirler, a sand setting pulp tank, a mill, first separation equipment and an open-circuit grinding machine. The double-overflow-pipe swirler is provided with a swirler inlet, a setting sand outlet, an outer overflow outlet and an inner overflow outlet. An outlet of the feeding pulp tank is connected with an inlet of the feeding pump. An outlet of the feeding pump is connected with the swirler inlet. The setting sand outlet is connected with an inlet of the mill. An outlet of the mill is connected with the feeding pulp tank. The outer overflow outlet is connected with the first separation equipment. The inner overflow outlet is connected with an inlet of the open-circuit grinding machine. An outlet of the open-circuit grinding machine is connected with the first separation equipment. The ore grinding grading method includes the steps that ore pulp is fed into the double-overflow-pipe swirler to be graded, and the graded setting sand products, outer overflow products and inner overflow products are processed separately. By means of the ore grinding grading system and method capable of controlling derichment of the iron minerals, derichment of the iron minerals in setting sand can be reduced, the handling capacity of the mill is improved, the energy consumption for ore grinding is reduced, and the quality of ore concentrate products is improved.

The invention discloses a low-grade mineral separation process, and relates to the technical field of mineral separation. The process comprises the following steps that coarse crushing operation is conducted on ores in a raw ore bin to obtain coarse crushed products, the coarse crushed products are fed into a vibrating screen for screening, undersize products return to a cone crusher for fine crushing operation, then the undersize products are fed into the vibrating screen, oversize products fall into a fine ore bin, materials in the fine ore bin are fed into a high-pressure roller mill, and the materials are fed into a ball mill A through a feeding chute; ball-milling discharged ore is conveyed to a linear screen, the undersize products sequentially enter two nelson concentrators for reselection, and the oversize products return to the ball mill A for regrinding; and the reselected concentrate enters a Nelson table concentrator for concentration and then is subjected to flotation operation, the flotation concentrate is sold to a smeltery, the tailings enter a reselection workshop for reselection through the table concentrator, the table concentrator concentrate is a final product of the tailings reselection workshop section and returns to a ball mill B for regrinding through a hose pump, and the chute tailings and the table concentrator tailings are classified through a cyclone, subjected to sand setting and discharged to the underground for filling operation; According to the process, the ore grinding effect is good, and the ore grinding process handling ability and the ore grinding index are improved.

The invention discloses a distributed efficient flotation machine. The distributed efficient flotation machine comprises a vertical tapered barrel (1), a centrifugal abrasion-resistant slag slurry pump (2), an ore pulp PE pipe (3), a plurality of ore pulp spray heads (4), a tapered foam collection tank (5), an intra-barrel foam collection main pipe (6), an annular extra-barrel foam collection tank(7) and an inflation main pipe (8). The vertical tapered barrel (1) is divided into an upper barrel body (101) and a lower barrel body (102), wherein the upper barrel body (101) is an open cylinder or a quadrangular square cylinder, and the lower barrel body (102) is a conical cylinder or a rectangular cylinder; and the bottom of the lower barrel body (102) is connected with the centrifugal abrasion-resistant slag slurry pump (2) and the ore pulp PE pipe (3), the ore pulp PE pipe (3) extends to a position above the top of the vertical tapered barrel (1) from bottom to top and is provided withthe ore pulp spray heads (4) which communicate with one another and face downwards, and the ore pulp spray heads (4) extend to the ore pulp level in the vertical tapered barrel (1).

The invention discloses a sorting process for improving the beneficiation recovery rate of nonferrous metals. According to the sorting process, under the conditions that original flotation equipment conditions and the plant layout are not changed and the types of the beneficiation reagents and the usage amount are unchanged, the internal structure of the original process flow of the beneficiationplant is optimized, a float product obtained through a first tank flotation machine in roughing operation of flotation target minerals is directly used as the foam product of the concentration operation I to enter the concentration operation II to undergoes sorting so that a part of easy-to-float target minerals can enter the next operation preferentially, the circulation amount of the previous concentration operation can be reduced , the flotation time can be shortened, the sorting out of the target minerals which are easy to float can be realized, and finally the recovery rate of the concentrate products can be improved.

The invention relates to the improved technology for metallurgy beneficiation, in particular to a beneficiation process for copper sulphide ore. After raw ore is ground through a ball mill, pulp is obtained. 1,200 g-1,500 g of lime, 100 g-150 g of lotus leaf and taro leaf juice, 100 g-120 g of lotus leaf and taro leaf residues and 50 g-70 g of pine oil are added in each ton of raw ore, the pH of the pulp is adjusted to be equal to 8, and copper concentrates with the copper content higher than 20% and tailings with the copper content lower than 0.039% are obtained after the pulp is subjected to rough selecting, two-stage fine selecting and four-stage scavenging. The beneficiation production cost is low, a collecting agent is free of toxicity and harm, environment friendliness is achieved, no corrosiveness exists for equipment, the recycling rate is high, and the beneficiation process is mainly used for beneficiation of sulphide ore and oxidized ore.