acid activated bentonite patent

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PDF Optimized Activation of Bentonite for Adsorption of ,

26-02-2019 0183 32 The adsorption of magnesium II and cadmium II from industrial phosphoric acid onto 4 samples of clays crude a , purified b , activated ,...

Patents Assigned to American Colloid

05-11-2003 0183 32 Acid activated clay for use in foundry sand Patent number 6860319 ....

bentonite activation methods for iron ore pelletization ,

Thus, improving the bentonite quality has great importance to the iron and , Three methods are usually used to sodium-modification 10-12 suspension , 6 Kawatra S K, Ripke S J Effects of bentonite fiber formation in iron ore pelletization J Effect Of Cations On Iron Ore Concentrate Pellet Strength ,...

Bentonite functionalized with propyl sulfonic acid groups ,

01-02-2011 0183 32 The main objective of this work is the functionalization of bentonite from the Amazon region by the grafting of propyl sulfonic acid groups to catalyze the esterification reaction of acetic acid and 1-propanol Functionalization was accomplished by anchoring, oxidation and acid activation of 3-mercaptopropyl trimethoxysilane, MTPS...

Dennis R Taylor Inventions, Patents and Patent ,

08-09-1997 0183 32 Abstract A process for making acid-activated bleaching earth from certain naturally occurring mixtures of calcium bentonite and attapulgite clay The process involves treating such clay with low levels of activating acid which are mixed with the dried and ground clay, or spray dried from slurries containing the clay-acid mixture...

Process for regenerating spent acid

US-5358915-A chemical patent summary...

Structural Property Improvements of Bentonite with ,

Abstract The acid activation of bentonite from Middle Anatolia, consisting of mostly montmorillonite, with a hot solution of H 2 SO 4 with different concentrations was carried out SEM images, nitrogen sorption isotherms and FTIR spectra were used to examine the structural changes of the bentonite with acid activation...

Rheological Properties of Acid

01-06-2010 0183 32 Activated Na-bentonite was prepared using sulfuric ac Flow curves of the suspensions were modeled using the Herschel-Bulkley equation, which performed well for this system The Herschel-Bulkley yield stress increased with the solids concentration and showed a maximum and minimum at the NaCl concentrations of 0001 M and 001 M, respectively, and ,...

History of Bentonite Bentonite

Bentonite has been used as drilling mud since 1901, it is currently being used in drilling and tunneling In 1906 , the bleaching soils were activated with acids in Germany Bentonite was used in refining oils or bleaching their color by activating with ac This product is still sold as clay activated with ac...

US Patent for Catalyst for removing olefins from aromatic ,

07-01-1998 0183 32 A catalyst is described on the basis of acid-activated smectitic clay minerals for removing olefins from aromatic compounds or mixtures of aromatic compounds which is characterized in that the acid-activated clay mineral contains at least 5 milli-equivalents/100 g of exchangeable Alsup3 cations...

PDF Acid Activation and Bleaching Performance of Turkish ,

acid-activated bentonite in the bleaching of soybean oil Braz J Chem Eng 20 2 , European patent EP0398636 Bleaching by Bentonite of Soybean Oil 307 Downloaded By ....

na bentonite powder acid activation process

Acid Activated Bentonite Production Line - Activation Of Iraqi Bentonite Powder With H2SO4 and its Application in Oils Bleaching Mohammed 1 70 acid activation The intensity of line 2theta = Acid ....

method of activating bentonite clays

Activated Bentonite Process United States Patent 3 240 616 METHOD OF ACTIVATING BENTONITE CLAYS Jerzy Harasowski and Helena Paczek both of ill Lubicz 22 m 5 Krakow Poland N0 Drawing Filed Aug 27 1962 Ser No 219 733 4 Claims Cl 72 This invention relates to methods of activating bentonite clays containing montmorillonites and the like...

Synthesis of Anthraquinones by Cyclization ,

01-01-1993 0183 32 2-41 2566 A mixture of ortho-benzoylbenzoic acid and a catalyst activated bentonite, phosphoric acid on diatomite support, zeolite-containing aluminosilicate catalysts, etc is heated to 200-300 176 C and kept for 1 to 8 hours in nitrogen atmosphere, the water evolved is collected in the Dean-Stark water separator...

Agent for the purification of waste waters and process for ,

Bentonite activated in any manner is useful as the activated bentonite in accordance with the present invention A particularly useful activated bentonite Tixoton is acid activated and contains approximately, by weight SiO 2 567 Al 2 O 3 202 CaO 24 MgO 43 Na 2 O K 2 O 27...

g Acid Activated Bentonitepdf fication and its ,

C Preparation of acid activated bentonite adsorbent Acid activated Bentonite were prepared by aqueous Either 53 kmol m-3 aqueous impregnation technique solution of HCI or 400 kg m 3 of aqueous solution of H2S04 was applied to bentonite by aqueous impregnation at 80 oc and 4 h The material was washed with deionized water...

Method for activation of bentonites

The activated bentonite is ground and ready for use The method may be carried out in batches or a continuous manner The activated bentonites prepared according to the present invention are much superior to the bentonites which are activated by the known classical method with sodium hydroxide or organic polymers...

Method of activating bentonite clays

United States Patent 3,240,616 METHOD OF ACTIVATING BENTONITE CLAYS Jerzy Harasowski and Helena Paczek, both of ill Lubicz 22 m5, Krakow, Poland N0 Drawing Filed Aug 27, 1962, Ser No 219,733....

Bentonite Patents and Patent Applications Class 106/DIG4 ,

21-12-1998 0183 32 Bentonite Patents Class 106/DIG4 Abstract A lightweight, cementitious composition and method which includes a noncementitious filler, Portland cement, bentonite, diataomaceous earth and lime The noncementitious filler may be sawdust, rubber chips, flyash or combinations of two or more of these ingredients...

Method for activation of bentonites

I claim 1 A method for the activation of bentonite which comprises treating the bentonite with 025-10 by weight of bentonite of an organic polymer and an aqueous alkaline solution, both known, the improvement being the incorporation into the treated bentonite of an amount of 001-10 by weight from the pretreated bentonite of a heavy metal salt selected from salts of Fe, ,...

Petition to Include Acid

Acid-activated bentonite CAS 98561-46-7 of the present petition is composed of odorless, virtually dustless, free flowing granular particl Typically, the product has a density of 50-55 lbs/ft3, pH 5 slurry in DI water 043, granular mesh size 16/48 mesh...

Petition to Include Acid

Acid-activated bentonite CAS 98561-46-7 of the present petition is composed of odorless, virtually dustless, free flowing granular particl Typically, the product has a density of 50-55 lbs/ft3, pH 5 slurry in DI water 043, granular mesh size 16/48 mesh Once formed, the probability of environmental contamination is quite low...