JPS5688814A - Purifying agent for wet preparation process of phosphoric acid - Google Patents

Purifying agent for wet preparation process of phosphoric acid

Info

Publication number
JPS5688814A
JPS5688814A JP16564679A JP16564679A JPS5688814A JP S5688814 A JPS5688814 A JP S5688814A JP 16564679 A JP16564679 A JP 16564679A JP 16564679 A JP16564679 A JP 16564679A JP S5688814 A JPS5688814 A JP S5688814A
Authority
JP
Japan
Prior art keywords
phosphoric acid
purifying agent
preparation process
acid
wet preparation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP16564679A
Other languages
Japanese (ja)
Inventor
Hajime Miyamae
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kurita Water Industries Ltd
Original Assignee
Kurita Water Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kurita Water Industries Ltd filed Critical Kurita Water Industries Ltd
Priority to JP16564679A priority Critical patent/JPS5688814A/en
Publication of JPS5688814A publication Critical patent/JPS5688814A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: The titled agent containing a water-soluble high polymer havng specific structural units, capable of giving high-purity phosphoric acid by adding a small amount thereof to the wet preparation process.
CONSTITUTION: A purifying agent for the wet preparation process of phosphoric acid consisting of water-soluble high polymer having a molecular weight of 1,000,000 to 15,000,000 obtained by (co)polymerizing 5% or more monomer having a structural unit of the formula (R1 is H or lower alkyl; R2 is lower alkylene; R3 and R4 are lower alkyl; R5 is benzyl; X is electro-negative group) with a polymerizable monomer, e.g. acrylamide or acrylic acid. In purifyting phosphoric acid with the purifying agent thus obtaned, a phosphate rock is decomposed with sulfuric acid or a mixed acid of the sulfuric acid with phosphoric acid, and the formed hemihydrate gypsum is converted into gypsum dihydrate. 10W40ppm the purifying agent is then added to aggregate the gypsum and other impurities into a floc. The resultant floc is separated by the filtration to give high-purity phosphoric acid.
COPYRIGHT: (C)1981,JPO&Japio
JP16564679A 1979-12-21 1979-12-21 Purifying agent for wet preparation process of phosphoric acid Pending JPS5688814A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16564679A JPS5688814A (en) 1979-12-21 1979-12-21 Purifying agent for wet preparation process of phosphoric acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16564679A JPS5688814A (en) 1979-12-21 1979-12-21 Purifying agent for wet preparation process of phosphoric acid

Publications (1)

Publication Number Publication Date
JPS5688814A true JPS5688814A (en) 1981-07-18

Family

ID=15816311

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16564679A Pending JPS5688814A (en) 1979-12-21 1979-12-21 Purifying agent for wet preparation process of phosphoric acid

Country Status (1)

Country Link
JP (1) JPS5688814A (en)

Similar Documents

Publication Publication Date Title
NO912964L (en) PROCEDURE FOR THE PREPARATION OF IMPROVED POLYAMINOPOLYAMIDE PICLORHYDRINE RESINES.
ES460536A1 (en) Process for manufacturing concrete of high corrosion resistance
EP0145685B1 (en) A cement mortar and concrete with a reduced water absorption and a method for manufacture thereof
JPS5688814A (en) Purifying agent for wet preparation process of phosphoric acid
JPS5755908A (en) Production of latex for serodiagnostic agent
JPS573921A (en) Underwater construction of steel-framed or steel bar-reinforced concrete structure
JPS55155007A (en) Water-soluble or dispersible copolymer and preparation of the same
EP0158501A3 (en) Method of preparation of polyester
ATE45171T1 (en) AQUEOUS POLYMER DISPERSION WITH STABILITY AND PROCESS FOR THEIR PRODUCTION.
JPS578210A (en) Production of water-absorbing resin
JPS54146278A (en) New semipermeable membrane
JPS56163105A (en) Porduction of fluorine-containing polymer
JPS5784794A (en) Scale-inhibitor for evaporating desalinator
ES8606223A1 (en) Stable cementitious composition.
JPS5297389A (en) Removal of sulfate ion in extracted phosphoric acid
JPS56127625A (en) Crosslinking agent
JPS572314A (en) Novel copolymer
JPS5571703A (en) Preparation of water-soluble particulate polymer
JPS55103253A (en) Molding sand composition
JPS5247848A (en) Process for preparing acrylonitrile polymer solutions
SU833718A1 (en) Method of producing concrete mix
JPS557804A (en) Preparation of polymethacrylic ester
JPS5538860A (en) Suspension polymerization process
KR900002753B1 (en) Compositions of concrete
SU1379292A1 (en) Method of preparing asbestos cement suspension