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Water-in-oil-in water emulsions of hydroxamated polymers and methods for using the same

A polymer, hydroxime technology, applied in the field of flocculants, can solve problems such as poor supernatant clarity

Inactive Publication Date: 2010-03-03
CYTEC TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, dextran has been shown to be a poor flocculant for trihydrate crystals as it renders the resulting supernatant less clear

Method used

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  • Water-in-oil-in water emulsions of hydroxamated polymers and methods for using the same
  • Water-in-oil-in water emulsions of hydroxamated polymers and methods for using the same
  • Water-in-oil-in water emulsions of hydroxamated polymers and methods for using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0028] Preparation of the water-in-oil-in-water polymer emulsion of embodiment 1-6 hydroxamation

[0029] Six (6) samples of stable hydroxamated water-in-oil-in-water polymer emulsions were prepared according to the following procedure

[0030] Taste. The concentrations of the components in each sample are shown in Table 1. Sodium aluminate trihydrate (Na 2 O·Al 2 o 3 ·3H 2 O) Powder and sodium hydroxide were dissolved in deionized water. followed by HF80 is rapidly added to a vigorously stirred solution of sodium aluminate and sodium hydroxide to form a stable water-in-oil-in-water emulsion of the hydroxamated polymer.

Embodiment 7-15

[0031] Example 7-15 Preparation of hydroxamated water-in-oil-in-water polymer emulsion

[0032] Stable water-in-oil-in-water emulsions of hydroxamated polymers were prepared according to the following procedure. 250 g / L aluminum sulfate hydrate [Al 2 (SO 4 ) 3 18H 2 O] solution and 100% NaOH dissolved in deionized water. The emulsion described in Example A was then added rapidly to the caustic aluminum sulfate solution with vigorous stirring. Table 2 lists several water-in-oil-in-water formulations prepared according to this procedure.

[0033]

[0034]

Embodiment 16

[0035] Preparation of the water-in-oil-in-water polymer emulsion of embodiment 16 hydroxamation

[0036] Stable water-in-oil-in-water emulsions of hydroxamated polymers were prepared according to the following procedure. With vigorous stirring, 150 parts of the aluminum sulfate solution was added to 150 parts of the comparative example A emulsion at a constant rate over 30-40 minutes. Aluminum sulfate solution uses 18.6 parts of 48% aluminum sulfate hydrate [Al 2 (SO 4 ) 3 14H 2 O] and 131.4 parts of deionized water were prepared. The concentration of Comparative Example A in the final product is 50%, Al 2 (SO 4 ) 3 14H 2 The concentration of O is 2.97%. The final product had a bulk viscosity of 780 cp and a pH of 10.1. This example demonstrates that it is possible to add an aqueous phase to a water-in-oil hydroxamated polymer emulsion to produce a stable water-in-oil-in-water hydroxamated polymer emulsion.

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Abstract

A method and composition for flocculation and separation of suspended solids from an industrial process stream containing suspended solids is provided. The method includes the steps of adding to the stream a water-in-oil-in-water emulsion polymer in an amount effective to flocculate the suspended solids and separating the flocculated solids therefrom. The composition is a water-in-oil-in-water emulsion of a water-soluble polymer in which the continuous phase is an aqueous solution of a water-soluble salt.

Description

[0001] This application is an international application number PCT / US2006 / 002310, the international application date is January 25, 2006. After the PCT international application entered the Chinese national phase, the application number is 200680005860.8, and the invention name is "water bag of hydroxamated polymer A divisional application of the invention patent application for water-in-oil emulsion and its application method. technical field [0002] This invention relates to flocculants and methods of their use, and more particularly to hydroxamated polymer emulsion flocculants and methods of flocculating solids in industrial process streams. The flocculant and method of the present invention are suitable for use in industrial processes such as the Bayer process for the recovery of alumina from bauxite. technical background [0003] Industrial processes that require the use of liquid media often use solid-liquid separation techniques. For aqueous systems, flocculants are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D21/01C08J3/03C08L33/26C08L33/04C08K3/24C08K3/30C02F1/56C01F7/02C01F7/0653C01F7/148
CPCB01D21/01C22B3/20C22B21/0015C02F2103/16C01F7/0653C01F7/148C02F2101/20C02F1/56C02F2103/28Y02P10/20
Inventor F·A·巴伦蒂纳M·卢埃林
Owner CYTEC TECH CORP
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