| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 181 | Process for upgrading andalusite | US287164 | 1988-12-21 | US4900431A | 1990-02-13 | Cariou F. Volpi; Jean-Jacques Predali; Philippe Raveneau |
| The invention relates to a process for upgrading andalusite present in an ore containing it. The process involves separation from other silicates by froth flotation to obtain a concentrate whose content of andalusite is higher than 90%. It is characterized by the fact that the process comprises at least the following steps:(a) grinding as may be required and placing in pulp of the ore containing the andalusite(b) pre-conditioning the ore containing the andalusite by keeping the pH of the aqueous phase of the pulp at a value of below 3.50, the solids ratio in the pulp being higher than 30% (by weight)(c) conditioning the preconditioned ore pulp for at least 10 minutes after addition of an alkyl sulfonate;(d) dilution as may be required of the pulp to bring it to a solids ratio comprised between 15 and 30% (by weight);(e) froth flotation by bubbling calibrated air bubbles therethrough in manner known in itself, the froth flotation proper lasting at the most 10 minutes. The invention is useful in the production of refractory raw materials. | ||||||
| 182 | Process for dressing kaolinite by flotation | US96706 | 1987-09-14 | US4744892A | 1988-05-17 | Wolfgang von Rybinski; Holger Tesmann; Bohuslav Dobias |
| Process for the selective separation of kaolinite and feldspar by flotation in aqueous pulp, wherein flotation is carried out at the pH-value of the pulp which is naturally obtained during suspension of the mixture of minerals in water using water-soluble salts with trivalent metal ions as activators and depressors, in the presence of cationic and/or anionic surfactants as collectors, and optionally in the presence of other standard flotation aids. | ||||||
| 183 | Promoters for froth flotation of coal | US585176 | 1984-03-01 | US4589980A | 1986-05-20 | Robert O. Keys |
| Disclosed is an improved process wherein coal particles are beneficiated by froth flotation under coal froth flotation conditions to separate the desired coal particles from remaining unwanted ash and like gangue material. The improvement of the present invention comprises conducting the froth flotation in the presence of an effective proportion of a promoter which is at least C.sub.10 aliphatic carboxylic acid or an aliphatic ester thereof which is devoid of nitrogen atoms; the hydroxylated, oxidized, or alkoxylated derivative of said acid or ester promoters; and mixtures thereof. | ||||||
| 184 | Method of conditioning clay for flotation using in situ ferrous activator | US411250 | 1982-08-25 | US4501658A | 1985-02-26 | Raymond H. Young |
| Method of treating a clay to remove therefrom titanium mineral impurities comprising the steps of mixing an aqueous clay with a collector for the titanium mineral impurities, a reducing agent, and, if needed, an activator preferably comprising a water-soluble ferrous salt; conditioning the resulting mixture of aqueous clay slurry, collector, reducing agent and activator to dissipate therein at least 25 horsepower hours of energy per ton of solids; subjecting the conditioned mixture to froth flotation and removing titanium impurities with the froth; and recovering clay having a reduced titanium minerals impurities content. The method includes the case where the activator is a ferrous salt formed in situ from iron impurities in the clay formed by adding said reducing agent in place of some or all of added activator. | ||||||
| 185 | Process for separating high viscosity bitumen from tar sands | US194515 | 1980-10-06 | US4410417A | 1983-10-18 | Jan D. Miller; Manoranjan Misra |
| A novel process for separating high viscosity bitumen from tar sand. The process includes grinding the tar sand to obtain phase disengagement of the bitumen phase from the sand phase and thereafter using flotation techniques to obtain phase separation of the bitumen phase from the sand phase. Phase disengagement is assisted by using a suitable wetting agent during the crushing step while the phase separation step is assisted by the inclusion of a promoter oil for the flotation step. | ||||||
| 186 | Flotation of Cu and Pb sulfide concentrates containing carbonates | US241960 | 1981-03-09 | US4351668A | 1982-09-28 | Leonard P. Stephenson; Arthur A. Schweizer |
| A process for the beneficiation of lead or copper-lead sulphide ore or concentrate containing calcium and magnesium carbonates wherein the ore or concentrate is conditioned with a limited amount of sulphuric acid to form an acidic slurry and subjecting the acidic slurry to froth flotation whereby an upgraded concentrate and a tailing comprising calcium and magnesium sulphate are obtained. | ||||||
| 187 | Flotation of phosphate ores with anionic agents | US84149 | 1979-10-12 | US4330398A | 1982-05-18 | John A. Alford |
| An anionic flotation agent comprising naturally derived fatty acids and, as a promoter, a sulfonated ethoxylated alcohol provides improved beneficiation and improved grade of phosphate ores by froth flotation. | ||||||
| 188 | Flotation process for improving recovery of phosphates from ores | US22656 | 1979-03-22 | US4227996A | 1980-10-14 | Nathan M. Levine; Walter Von Drathen |
| A flotation process is provided for beneficiating phosphate ores in at least two floats after conditioning with 0.1-1.5 pound per ton of fuel oil and adding 0.025-0.1 pound per ton of a frother and 0.2-0.5 pound per ton of a polyamine cationic collector to remove silica in the froth (tails) and obtain 75-84% recoveries of phosphate in the concentrate (sink) which contains no more than about 6% insol. For some ores, the floats can be made on each fraction, after desliming thereof, which are obtained by screening over a 35 mesh screen. For other ores, desliming and a rougher flotation are initially needed. The silica froths (rougher tails) from this float are then cleaned and recleaned in separate floats, without additional conditioning or addition of collector to produce tails which are discarded and a combined sink which is screened over a 48 mesh screen to produce a +48 mesh fraction which is discarded and a -48 mesh fraction which is concentrate (product). Depending upon the ore, the sink from the first float is directly usable as product or is screened over a 35 mesh screen to produce a -35 mesh concentrate (product) and a +35 mesh fraction which is conditioned with fuel oil, treated with a frother and collector, and floated to produce a tails, which is discarded, and a third concentrate as product. | ||||||
| 189 | Concentration of gold, sulphide minerals and uranium oxide minerals by flotation from ores and metallurgical plant products | US509428 | 1974-09-26 | US3964997A | 1976-06-22 | David Weston |
| A process for the concentration by flotation of gold, gold bearing minerals and uranium oxide minerals from ores and metallurgical plant products whereby a pulp of a ground ore is agitation conditioned in at least two agitation conditioning stages wherein in at least one stage the pH of the pulp is lowered with an acid agent to within the pH range of about 1.5 to 5.0, and wherein in at least one additional agitation conditioning stage the pH of the pulp is raised to within the pH range of about 6.0 to 11.0 and wherein in at least the last stage prior to flotation at least one collector selected from the group of sulfhydryl anionic collectors is present, and subsequently, the at least two stage agitation conditoned pulp is subjected to flotation to produce a flotation concentrate enriched in at least one of the mineral values from the group consisting of gold, gold bearing minerals and uranium minerals. | ||||||
| 190 | Cationic conditioning agents for potash flotation | US3782546D | 1971-12-03 | US3782546A | 1974-01-01 | KIRWIN R; HART W; ANTONETTI J |
| An improved froth flotation process for separating sylvite from a pulp containing sylvite using a water-soluble, high molecular weight, diallyl dialkyl quaternary ammonium polymer as a slime conditioning agent is disclosed.
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| 191 | Kaolin flotation process | US3744630D | 1970-11-02 | US3744630A | 1973-07-10 | SMITH S |
| Titanium mineral impurities are removed from Kaolin by forming an acidic dispersion of Kaolin, water and dispersing agent (acidic relative to the flotation pH), adding a collector to the dispersion, conditioning the acidic dispersion, raising the pH by the addition of reagent to the dispersion, subjecting the dispersion to a froth flotation step and recovering the Kaolin having a reduced titanium mineral impurity content.
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| 192 | Process for the flotation of fluorite | US3623605D | 1970-01-09 | US3623605A | 1971-11-30 | PERRI GIOVANNI; AQUILI GIANFRANCO |
| Improvement in flotation of calcium fluoride from claycontaining ores which comprises conditioning the flotation slurry with an alkyl phenol ethoxide and a fatty acid ethoxide prior to adding the usual flotation reactants. Flotation slurry may be prepared from common calcium fluoride crude ore or from clay slime discarded from prior flotation processes.
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| 193 | Di(4-5 carbon branched primary alkyl) dithiophosphate promoters for the flotation of copper middlings | US3570772D | 1969-08-22 | US3570772A | 1971-03-16 | BOOTH ROBERT BEN; HARTJENS HERMAN; FALVEY JOHN JOSEPH |
| In the flotation of copper sulfides; diisobutyl dithiophosphates, diisoamyl dithiophosphates and di(2-methyl-1butyl) dithiophosphates give a superior flotation rate, recovery and selectivity as compared with conventional dialkyl dithiophosphates, often permitting a coarser grind, and flotation of middlings, followed by a regrind ultimately resulting in a higher recovery of copper.
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| 194 | Cold water dispersible emulsions of filming amines | US70113568 | 1968-01-29 | US3520820A | 1970-07-21 | HWA CHIH MING |
| 195 | Polyaminomethyl phenols | US10162761 | 1961-04-10 | US3060210A | 1962-10-23 | DE GROOTE MELVIN; KWAN-TING SHEN |
| 196 | Oxidizing agents including sodium peroxide in phosphate flotation | US52577655 | 1955-08-01 | US2826301A | 1958-03-11 | LE BARON IRA M |
| 197 | Beneficiation of iron ores | US34783153 | 1953-04-09 | US2769541A | 1956-11-06 | PERRY RICHMOND E |
| 198 | Method of beneficiating sand | US31951052 | 1952-11-08 | US2769540A | 1956-11-06 | BROWN OTTO R |
| 199 | Concentration of oxidized iron ores by froth flotation in the presence of carbohydrate xanthates | US25552151 | 1951-11-08 | US2629493A | 1953-02-24 | BROWN EARL H |
| 200 | Froth flotation of sulfide minerals with di-alkyl thiophosphoryl chlorides | US18847850 | 1950-10-04 | US2621789A | 1952-12-16 | BOOTH ROBERT B; MORRIS JR CHARLES L |
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