Methods and systems for producing activated silicate based materials using sustainable energy and materials

Patent metadata

Field	Value
Publication number	US-11242261-B2
Application number	US-201716333759-A
Country	US
Kind code	B2
Filing date	Sep 19, 2017
Priority date	Sep 19, 2016
Publication date	Feb 8, 2022
Grant date	Feb 8, 2022

Abstract

Methods and systems for producing activated silicate materials are disclosed. A silicate source material is provided for reaction with a reforming agent in a reforming process. The reforming process is a hydrothermal process and/or a high temperature silicate reforming (HTSR) process. The reaction materials are brought to the suitable reaction temperature via a heat source in the presence of the suitable reaction medium. The activated silicate materials exhibit improved reactivity compared to non-activated silicate materials and thus are advantageously employed in elemental extraction processes to produce a valuable material product.

First claim

What is claimed is:

1. A method of producing an activated silicate material comprising: providing a silicate source material; reforming the silicate source material to the activated silicate material with a reforming agent in a reforming reaction; and providing the activated silicate material to an elemental extraction process,
wherein the reforming the silicate source material is performed using a high temperature silicate reforming (HTSR) process at about 300° C. to about 1500° C., wherein a weight ratio of the silicate source material to the reforming agent is about 0.1:1 to about 100:1, wherein the silicate source material comprises slag, mine tailing, fly ash, kiln dust, serpentine, olivine, wollastonite or a combination thereof.

2. The method according to claim 1 , wherein the reforming the silicate source material further comprises applying heat from an industrial energy production source, an industrial energy production process, a waste energy source, a molten iron slag, a molten steel slag, a flue gas, an exhaust gas, an exhausted steam, or a combination thereof.

3. The method according to claim 1 , wherein the reforming the silicate source material further comprises: performing in an anhydrous conditions.

4. The method according to claim 3 , wherein reforming the silicate source material further comprises: intermixing the reforming agent with a molten slag.

5. The method according to claim 3 , wherein the reforming agent comprises boron trioxide (B 2 O 3 ), lithium tetraborate (Li 2 B 4 O 7 ), silica (SiO 2 ), ammonium (NH 4+ ) based acidic salts; borax (Na 2 B 4 O 7 •10H 2 O), lithium metaborate (LiBO 2 ), sodium hydroxide (NaOH), potassium hydroxide (KOH), sodium carbonate/bicarbonate (Na 2 CO 3 /NaHCO 3 ), ammonium based basic salts; sodium chloride (NaCl), fluorite (CaF 2 ), alumina (Al 2 O 3 ), ammonium based neutral salts, or a combination thereof.

6. The method according to claim 1 , wherein the elemental extraction process further comprises a mineral carbonation process, oxides/hydroxide production process, halide production process, ferrous metal production process, nonferrous metal production process, rare earth production process, or a combination thereof.

Assignees

• Univ Columbia

Inventors

• Park Ah-Hyung Alissa
• Zhou Xiaozhou
• Zhou Chengchuan

Classifications

• C01F5/14

  Magnesium hydroxide · CPC title

• Y02P20/129

  Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines · CPC title

• C01F11/12

  from silicates · CPC title

• C01B33/20 Primary

  Silicates (persilicates C01B15/14 {; containing aluminium C01B33/26}) · CPC title

• Y02C20/40

  of CO2 · CPC title