A STUDY OF POLYMER/SURF ACT ANT INTERACTION AT THE …
ce of quartz zeta potenti81 in 3 X 10-2 kmol m-3 NaCI and 5 X 10-4 kmol m-3 amine plus 3 X 10-2 kmol m-3 NaCI solutions. An isoelectric point of about pH 3.0 is obtained for quartz, in agreement with literature values which vary from 1 to 3.7 [27]. The presence of amine is found to have a sig-
Correlation of Adsorption of Surfactants with Fracture and ...
12%Abstract. Fracture of quartz by single impact as well as wet ball milling is studied in presence of different surfactants (dodecylammonium chloride), and inorganic electrolytes (A1Cl 3, CaCI 2).The data show an increase or decrease in fracture efficiency depending on parameters such as pH, type and concentration of added surfactant.
US2272874A - Grinding wheel - Google Patents
US2272874A US405241A US40524141A US2272874A US 2272874 A US2272874 A US 2272874A US 405241 A US405241 A US 405241A US 40524141 A US40524141 A US 40524141A US 2272874 A US2272874 A US 2272874A Authority US United States Prior art keywords resin acid abrasive hundred formaldehyde Prior art date Legal status (The legal status is an assumption and is not a …
Recovery of High-grade Kaolin and Their Properties ...
Grinding of Quartz in Amine Solutions. ... The activation effect generated by the dry grinding of a commercial quartz-free kaolin and a natural Tunisian quartz-rich kaolin was studied. The ...
Extraction of Iron from Hematite - Xinhai
The monomer quartz and clay chlorite and other gangue minerals in the ore are discharged under the rough grinding condition by strong magnetic separation, and the rough magnetic separation concentrate is sent to the flotation method after the fine grinding for producing the qualified hematite concentrate. 03 3. Extraction of iron from hematite ...
Froth Floatation - Purdue University
The lauryl amine dissolves better in the glacial acetic acid and keeps the pH ~5. This solution is then mixed with 10 liters water and then carbonated. The quartz must be pre-treated for 1 hour with a 1% solution of hydrofluoric acid.
Technical Publications :: Ponisseril Somasundaran
Technical Publications. • Somasundaran, P., and D. W. Fuerstenau, 'Preferential Energy Consumption in Tumbling Mills', Transactions of the Society of Mining Engineers of AIME, 226 (1963), 132-34. • Fuerstenau, D. W., T. W. Healy, and P. Somasundaran, 'The Role of the Hydrocarbon Chain of Alkyl Collectors in Flotation', T ransactions ...
[PDF] Mechanisms of grinding modification by chemical ...
In contrast to the above, amine decreased the grinding rate in the acidic pH range owing to increased flocculation of quartz fines in the presence of amine in this pH range. These results show that grinding of quartz can be improved by amine if other conditions such as pH are controlled.
Mechanisms of grinding modification by chemical …
Amine was found to improve grinding, pulp fluidity, and primary breakage of quartz suspensions, especially in the alkaline pH range. These beneficial effects are attributed to the formation of highly surface-active amineaminium complexes in this pH range.
US10155893B2 - High molecular weight PAG coolant for ...
Described are various coolant and/or lubricating compositions. Also described are various methods for grinding glass that employ such a coolant and/or lubricating composition. Such compositions may find use in the grinding of glass, such as automotive glass, flat glass, ophthalmic glass, precision ophthalmic glass, ceramics, quartz, solar glass, precision optical glass, lens glass ...
Grinding of Quartz in Amine Solutions - columbia.edu
Grinding of quartz in amine IOlu- tiona. Int. J. Miner. PrOCell., 6: 105-117. This study, initiated to investigate the effect of additions of surface active fealents on the wet-lrindinl of ores, hu shown that improved grinding can be obtained at certain levels of amine concentration and pH.
US5429675A - Grinding aid composition and cement product ...
A grinding aid composition suitable for grinding clinker into hydraulic cement powder, an improved grinding process and an improved cement product are disclosed. The grinding aid composition is composed of a mixture of at least one alkylene ether glycol and particulate carbon.
(PDF) A critical review on the mechanisms of chemical ...
Grinding aids (GAs) have been an important advent in the comminution circuits. Over the last few decades, in order to address the high energy consumption and scarcity of potable water for mineral processing, chemical additives have become a promising
diamond blades, diamond grinding wheels - diamond-tool.en ...
Through our use of technology, we are dedicated to offering you better diamond tool solutions. 1985-Guangzhou Crystal Material Technology Development Co., Ltd. was established by Guangzhou Electronic Technology Institute of Chinese Science Academy. The production of the first batch of diamond glass edge-grinding wheels was commenced.
Pyrochlore flotation from silicate gangue minerals: Amine ...
In their study of the adsorption of amines on quartz, Vidyadhar et al. (2002) outline three established regions of adsorption of an amine on the surface of quartz: The amine is first H-bonded to surface silanol (Si-O-H) groups until the zeta potential is rendered positive (i.e. the particle is floatable).
Eastman Rock Crushers & Sand Making Machines
Eastman Technology is a professional Rock Crusher manufacturer, founded in 1985.We offering crushing & grinding equipment and services for the mineral crushing, aggregate producing, construction waste recycling.With our unique knowledge and innovative solutions, we help our customers improve their operational efficiency, reduce risks and increase profitability.
(PDF) Mechanisms of grinding modification by chemical ...
DDACI. Ionic strength: 3 X 10-2 mol{l (KNO3). due to amine addition are shown in Figs. 6 and 7. A. Acidic solutions (pH 3.0) a) The results show a decreasein grinding rate in the presenceof amine at all levelsof amine addition. b) Amine addition does not affect the …
Common Hematite Flotation Methods and Introduction of ...
Cationic collector: when the pH of the pulp is adjusted to 8~9 with sodium carbonate, starch, dextrin, tannin and other iron ore substances are used to inhibit iron minerals. Then, use amine collectors to remove quartz gangue. The main collector is ether amine, followed by fatty amine. (3) Hematite positive-reverse flotation separation
Ultra Fine Grinding of Yttrai ... Acid Solutions
effective as a dispersant for the wet sieving of quartz ground in 10-1 mol/dm3 amine solution. The grinding results in this case initially suggested the use of amine to be detrimental. However, after proper dispersion of the ground products
Mechanochemical Effects in Ultrafine Grinding
All i~rganic electrolytes and the amine tested as additives _re found markedly to af-fect the grinding process. nte nature of the effect is particularly sensitive to pH and the type of ~cal used. Mhile calciua. sulfate and silicate salts caused a marked decrease in the grinding of …
Developing Effective Separation of Feldspar and Quartz ...
Applying aliphatic amines and petroleum sulfonate mixing collector in strong acidic environment using H 2 SO 4 or HCl as pH regulator, selective flotation separation of feldspar from quartz [11,12,13] could be achieved. However, the effectiveness of this separation method is worse than conventional fluorine-containing flotation.
Minerals | Free Full-Text | Methods of Ore Pretreatment ...
The use of grinding aids in the cement industry to improve the grindability and product throughput of the cement clinker dates to 1930 . Most grinding aids are organic liquids, such as tri-ethanol amine, glycerol, alcohols, propylene glycol, organosilicones, diethylene glycol, …
Study on regulators of purifying magnesite ore by cationic ...
In the collector ether amine system, at a slurry pH of 5.0, ether amine has a certain collection effect on magnesite, dolomite, and quartz, and …
Grinding and Polishing - ASM International
in a caustic solution that has an attack-polish effect on some materials. Either colloidal silica or a 1 to 10 mixture of Murakami's solution (see Table 5.1) to 0.05 µm γ-Al 2 O 3 is recommended for the final polishing step on alumina with an abundant glass phase (Ref. 1). Murakami's solution is 3 g KOH and 30 g K 3 Fe(CN) 6 in 60 mL ...
Combination of Organic and Inorganic Materials
acetic acid solution: 0.5‒2.0 wt% Preparation Dripping silane Preparation Stirring Dripping silane Adjust pH of aqueous solution (alcohol can be used in mix) While stirring, gradually drop in silane coupling agent (0.1‒3.0 wt%). Stir until solution is clear (around 30‒60 min) Filter with a mesh filter to remove foreign matter if present.
(PDF) The influence of Triethanol amine and Ethylene ...
Triethanol amine and ethylene glycol are used as grinding aids for Ordinary Portland Cement (OPC). Standard water of consistency, Blaine area, initial and final setting times and compressive ...
How to disperse and stabilize pigments
where h is the depth (or height) of penetration during the time t, - is the surface tension of the wetting liquid, - its viscosity, - the wetting angle, r - mean radius of capillaries, C - structural coefficient, associated with parameters of the porous structure, W - energy (heat) of wetting.. The wetting step of dispersing processes can be intensified by the use of wetting agents and/or ...
The influence of different charged poly (amido amine ...
The influence of dendrimer on the bacterial transport and deposition behaviors in saturated porous media (quartz sand) was investigated in both NaCl (10 and 25 mM) and CaCl 2 solutions (1.2 and 5 mM). 3.5G and 4G poly (amido amine) (PAMAM) dendrimer was employed as negatively and positively charged dendrimer, respectively. Three dendrimer concentrations (10 μg/L, 1 and 10 mg/L) were ...
Beryllium Extraction and Beneficiation
The bulk feldspar and beryl concentrate is floated with amine acetate collector and an alcohol frother, usually the same as used in the mica float but in larger quantities, up to 0.5 lbs. amine acetate and 0.05 lbs. of frother per ton of solids. BERYL FLOTATION. The bulk feldspar-beryl concentrate is thickened in a Thickener.
A critical review on the mechanisms of chemical additives ...
Ryncarz and Laskowski correlated the observed effects to the zeta potential values of quartz in amine solutions where grinding efficiency was low at pH conditions close to the point of zero charge (PZC) values. Halasyamani et al. investigated the effect of pH on the grinding of quartz and calcite with HCl and NaOH in a ball mill. The maximum ...