Title: METHOD OF INCREASING THE DISPERSIBILITY OF SLURRY PARTICLES

Abstract

A method is described for increasing the dispersibility of metallic oxide particles, particularly thorium oxide, in slurries. Organo-silicon compounds, such as organosilicon halides and silicate esters, are deposited on the surface of the oxide particles. A firing step conducted at temperatures of 600 to 1200 deg C removes the organic groups leaving a surface coating of silica, which provides the desired increase in particle dispersibility.

Inventors:

McBride, J P

Issue Date:

1959-12-15

OSTI Identifier:

4186898

Patent Number(s):

2917406

Assignee:

U.S. Atomic Energy Commission

Patent Classifications (CPCs):

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

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Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Y02E30/30 - Nuclear fission reactors

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

C01P2006/22 - Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B01J13/0047 - {containing a metal oxide}

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

C01P2002/60 - Compounds characterised by their crystallite size
C01P2006/12 - Surface area
C01P2004/84 - one phase coated with the other
C01P2004/61 - Micrometer sized, i.e. from 1-100 micrometer

C - CHEMISTRY C09 - DYES C09C - TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES

C09C3/12 - Treatment with organosilicon compounds {

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

C01P2006/20 - Powder free flowing behaviour

G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS

G21C3/50 - Suspensions of the active constituent

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

C01B13/145 - {After-treatment of oxides or hydroxides, e.g. pulverising, drying, decreasing the acidity}

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B01J13/0034 - {Additives, e.g. in view of promoting stabilisation or peptisation}

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01F - MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING

B01F17/0071 - {Organic compounds containing silicon}

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

C01P2004/62 - Submicrometer sized, i.e. from 0.1-1 micrometer

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01F - COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS

C01F15/00 - Compounds of thorium

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NSA Number:

NSA-14-007506

Resource Type:

Patent

Resource Relation:

Other Information: Orig. Receipt Date: 31-DEC-60

Country of Publication:

United States

Language:

English

Subject:

ENGINEERING AND EQUIPMENT; COATING; COMBUSTION; DISPERSIONS; EFFICIENCY; ESTERS; HALIDES; HIGH TEMPERATURE; METALS; ORGANOMETALLICS; OXIDES; PARTICLES; PATENT; SILICATES; SILICON COMPOUNDS; SILICON OXIDES; SLURRIES; SURFACES; THORIUM OXIDES