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Title: Method for the production of mineral wool and iron from serpentine ore

Abstract

Magnesium silicate mineral wools having a relatively high liquidus temperature of at least about 1400.degree. C. and to methods for the production thereof are provided. The methods of the present invention comprise melting a magnesium silicate feedstock (e.g., comprising a serpentine or olivine ore) having a liquidus temperature of at least about 1400.degree. C. to form a molten magnesium silicate, and subsequently fiberizing the molten magnesium silicate to produce a magnesium silicate mineral wool. In one embodiment, the magnesium silicate feedstock contains iron oxide (e.g., up to about 12% by weight). Preferably, the melting is performed in the presence of a reducing agent to produce an iron alloy, which can be separated from the molten ore. Useful magnesium silicate feedstocks include, without limitation, serpentine and olivine ores. Optionally, silicon dioxide can be added to the feedstock to lower the liquidus temperature thereof.

Inventors:
 [1];  [2];  [3]
  1. Albany, OR
  2. Scio, OR
  3. Lebanon, OR
Issue Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1029266
Patent Number(s):
8033140
Application Number:
12/124,421
Assignee:
The United States of America as represented by the United States Department of Energy (Washington, DC)
Patent Classifications (CPCs):
C - CHEMISTRY C03 - GLASS C03B - MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
DOE Contract Number:  
04-14-HRL
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

O'Connor, William K, Rush, Gilbert E, and Soltau, Glen F. Method for the production of mineral wool and iron from serpentine ore. United States: N. p., 2011. Web.
O'Connor, William K, Rush, Gilbert E, & Soltau, Glen F. Method for the production of mineral wool and iron from serpentine ore. United States.
O'Connor, William K, Rush, Gilbert E, and Soltau, Glen F. Tue . "Method for the production of mineral wool and iron from serpentine ore". United States. https://www.osti.gov/servlets/purl/1029266.
@article{osti_1029266,
title = {Method for the production of mineral wool and iron from serpentine ore},
author = {O'Connor, William K and Rush, Gilbert E and Soltau, Glen F},
abstractNote = {Magnesium silicate mineral wools having a relatively high liquidus temperature of at least about 1400.degree. C. and to methods for the production thereof are provided. The methods of the present invention comprise melting a magnesium silicate feedstock (e.g., comprising a serpentine or olivine ore) having a liquidus temperature of at least about 1400.degree. C. to form a molten magnesium silicate, and subsequently fiberizing the molten magnesium silicate to produce a magnesium silicate mineral wool. In one embodiment, the magnesium silicate feedstock contains iron oxide (e.g., up to about 12% by weight). Preferably, the melting is performed in the presence of a reducing agent to produce an iron alloy, which can be separated from the molten ore. Useful magnesium silicate feedstocks include, without limitation, serpentine and olivine ores. Optionally, silicon dioxide can be added to the feedstock to lower the liquidus temperature thereof.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {10}
}

Patent:

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