Unlock instant, AI-driven research and patent intelligence for your innovation.

Inhibitiion of water formed scale in acid conditions

A technology of acid solution and composition, which is applied in mining wastewater treatment, descaling and water softening, metallurgical wastewater treatment, etc. It can solve the problems of increasing the complexity of inhibition, and achieve the effects of inhibiting scale formation, increasing production, and increasing operating time

Inactive Publication Date: 2012-01-11
NALCO CO
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This phase inversion increases the complexity of their inhibition

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The claimed invention is a method for inhibiting the formation and sticking of minerals that cause scale / deposits under acid conditions wherein ore and other materials are combined with solution in a digestion process to react to form a slurry that is passed through The purification process to form a stream in which the scale inhibiting composition is added at any point in the production process starting from digestion. The method is flexible, i.e., the antiscalant composition can be added additionally before or during digestion, and / or additionally to the slurry, and / or additionally before slurry processing, and in sub-stoichiometric amounts . Other materials may include industrial process streams from slaughterhouses, by-products of alkali metal smelting, or industrial acid waste. The claimed invention applies to any process where mineral scale forms in an acidic environment and must be inhibited.

[0037] The claimed invention allows digestion to take place in dige...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The current invention relates to the inhibition of scale deposits in an acidic slurry or solution. The current invention uses an aqueous synthetic mixture comprising a phosphate, phosphonate, anionic polymer, or combinations thereof in the slurry and / or solution to inhibit scale during the processing of ore. The production of scale in an acidic environment is difficult because of the acidic solution neutralizing most known inhibitors. The claimed invention has a significant decrease in the scale production allowing for reduced down time of systems for de-scaling procedures.

Description

[0001] Cross References to Related Applications [0002] This application is a continuation-in-part of US Patent Application Serial No. 12 / 130,515, filed May 30, 2008, from which priority is claimed and which is incorporated by reference into this disclosure. [0003] Copyright Notice [0004] Portions of the disclosure of this patent document include or may include copyrighted material. The copyright owner has no objection to the photocopying by anyone of this patent document or the patent disclosure, in strict accordance with the Patent and Trademark Office patent file or records, but all other copyright rights are reserved. technical field [0005] The present invention relates to the inhibition of deposits (fouling) of acidic aqueous solutions by addition of synthetic aqueous mixtures comprising organic phosphonates, organic phosphate derivatives, inorganic phosphates, anionic polymers and copolymers or combinations thereof. Substances include scales such as calcium sulf...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/00C02F5/14C02F9/00C02F103/10C02F103/16C02F103/22
CPCC02F5/00C02F5/14C02F9/00C02F2103/22C02F2103/10C02F2103/16
Inventor 亚斯波尔·S·吉尔丹尼尔·N·T·哈伊
Owner NALCO CO