US2013338295A1PendingUtilityA1

Method for Improving Rheological Properties of Mineral Slurry

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Individually held — no corporate assignee on recordPriority: Dec 14, 2010Filed: Dec 14, 2011Published: Dec 19, 2013
Est. expiryDec 14, 2030(~4.4 yrs left)· nominal 20-yr term from priority
Inventors:Lucas MooreMika Martikainen
B03D 1/012B03D 2203/04B03D 1/014B03D 2203/02B03D 1/016B02C 23/08B03D 1/008C08K 3/34B03D 2201/005
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Claims

Abstract

A method for improving the rheological properties of mineral slurry comprising adding a copolymeric dispersing agent to the slurry to disperse silicate minerals. Also disclosed is a method for flotating mineral slurry.

Claims

exact text as granted — not AI-modified
1 . A method for improving rheological properties of mineral slurry comprising adding a copolymeric dispersing agent to the slurry to disperse silicate minerals. 
     
     
         2 . The method of  claim 1 , wherein the silicate mineral is magnesium silicate. 
     
     
         3 . The method of  claim 1 , wherein the silicate mineral is serpentine. 
     
     
         4 . The method of  claim 1 , wherein the rheological properties comprise the viscosity of the slurry. 
     
     
         5 . The method of any of the  claim 1 ; wherein the copolymeric dispersing agent is a copolymer of acrylic acid and 2-acrylamido-2-methyl propane sulfonic acid. 
     
     
         6 . The method of  claim 5 , wherein the copolymer has a molecular weight of 9000-20000 Daltons. 
     
     
         7 . The method of  claim 5 , wherein said copolymer has a molecular weight of 15000-20000 Daltons. 
     
     
         8 . The method of  claim 5 , wherein the ratio of acrylic acid to 2-acrylamido-2-methyl propane sulfonic acid is in the range of 70:30 to 50:50 (w/w). 
     
     
         9 . The method of  claim 5 , wherein the ratio of acrylic acid to 2-acrylamido-2-methyl propane sulfonic acid is about 60:40 (w/w). 
     
     
         10 . The method of  claim 1 , wherein the copolymeric dispersing agent is a copolymer of acrylic acid and hydroxyethyl methacrylate. 
     
     
         11 . The method of  claim 10 , wherein the copolymer has a molecular weight of 6000-14000 Daltons. 
     
     
         12 . The method of  claim 10 , wherein the ratio of acrylic acid to hydroxyethyl methacrylate may be in the range of 80:20 to 60:40 (w/w). 
     
     
         13 . The method of  claim 10 , wherein the ratio of acrylic acid to hydroxyethyl methacrylate is about 70:30 (w/w). 
     
     
         14 . The method of  claim 1 , wherein the copolymeric dispersing agent is a copolymer of acrylic acid and methacrylic acid. 
     
     
         15 . The method of  claim 14 , wherein the copolymer has a molecular weight of 4000-7000 Daltons. 
     
     
         16 . The method of  claim 14 , wherein the copolymer has a molecular weight of about 5500 Daltons. 
     
     
         17 . The method of  claim 1 , wherein the copolymeric dispersing agent is a copolymer of ethylene glycol methacrylate phosphate and hydroxyethyl methacrylate. 
     
     
         18 . The method of  claim 17 , wherein the copolymer has a molecular weight of 8000-12000 Daltons. 
     
     
         19 . The method of  claim 17 , wherein the copolymer has a molecular weight of about 10000 Daltons. 
     
     
         20 . A method for floating mineral slurry, comprising improving the rheological properties of the slurry with the method of any of the preceding claims.

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