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US 12,558,759 B2Granted
Usage of ferrochrome slag with optimized particle size as a blasting abrasive
AssigneeSaudi Arabian Oil Company
InventorsShaj K. Manjalivalapil, Sangki Chi, Abbas Y. Al-Hulaimy, Ebad Ul Haque
Life of this patent
Estimating the term…
Abstract
A blasting abrasive and a method of use are provided. The blasting abrasive includes a ferrochrome slag having a composition of SiO2 in a range of from about 30 to 40 wt % (weight percent); Al2O3 in a range of from about 25 to 35 wt %; of Fe2O3, Cr2O3, or a combination thereof in a range of from about 10-20 wt %; MgO in a range of from about 15 to 25 wt %, by weight of the ferrochrome slag. The ferrochrome slag has a particle size in a range of from about 100 to 850 μm (micrometers) with a particular size distribution.
Claims11
A blasting abrasive, comprising:
- a ferrochrome slag having a composition of SiO2 in a range of from about 30 to 40 wt % (weight percent);
- Al2O3 in a range of from about 25 to 35 wt %;
- Fe2O3, Cr2O3, or a combination thereof in a range of from about 10-20 wt %;
- MgO in a range of from about 15 to 25 wt %, by weight of the ferrochrome slag,
- wherein the ferrochrome slag has a particle size in a range of from about 100 to 850 μm (micrometers), and
- wherein the ferrochrome slag has a particle size distribution in a range of from about 25 to 30% of particles sized in a range of from 600 to 850 μm, in a range of from about 10 to 20% of particles sized in a range of from 500 to 600 μm, in a range of from about 10 to 20% of particles sized in a range of from 425 to 500 μm, in a range of from about 15 to 25% of particles sized in a range of from 250 to 425 μm, in a range of from about 5 to 10% of particles sized in a range of from 212 to 250 μm, in a range of from about 10 to 15% of particles sized in a range of from 150 to 212 μm, in a range of from about 0.1 to 5% of particles sized in a range of from 106 to 150 μm, based on number of particles.
3 more elements
A blasting abrasive, comprising:
- a ferrochrome slag having a composition of SiO2 in a range of from about 30 to 40 wt % (weight percent):
- Al2O3 in a range of from about 25 to 35 wt %;
- of Fe2O3, Cr2O3, or a combination thereof in a range of from about 10-20 wt %;
- MgO in a range of from about 15 to 25 wt %, by weight of the ferrochrome slag,
- wherein the ferrochrome slag has a particle size in a range of from about 100 to 850 μm (micrometers),
- wherein the ferrochrome slag has a particle size distribution in a range of from about 20 to 30% of particles sized in a range of from 600 to 850 μm, in a range of from about 20 to 30% at 500 to 600 μm, in a range of from about 10 to 20% of particles sized in a range of from 425 to 500 μm, in a range of from about 15 to 20% of particles sized in a range of from 250 to 425 μm, in a range of from about 8 to 13% of particles sized in a range of from 212 to 250 μm, and in a range of from about 2 to 10% of particles sized in a range of from 150 to 212 μm, based on number of particles.
3 more elements
A method of surface preparation, comprising:
- introducing a blasting abrasive suspension onto a surface such that a contaminant is removed from the surface, and a treated surface forms,
- wherein the blasting abrasive suspension comprises a ferrochrome slag suspended in a carrier gas,
- wherein the ferrochrome slag has a composition of SiO2 in a range of from about 30 to 40 wt % (weight percent);
- Al2O3 in a range of from about 25 to 35 wt %;
- of Fe2O3, Cr2O3, or a combination thereof in a range of from about 10-20 wt %;
- MgO in a range of from about 15 to 25 wt %, by weight of the ferrochrome slag has a particle size in a range of from about 100 to 850 μm (micrometers), and
- wherein the ferrochrome slag has a particle size distribution in a range of from about 25 to 30% of particles sized in a range of from 600 to 850 μm, in a range of from about 10 to 20% of particles sized in a range of from 500 to 600 μm, in a range of from about 10 to 20% of particles sized in a range of from 425 to 500 μm, in a range of from about 15 to 25% of particles sized in a range of from 250 to 425 μm, in a range of from about 5 to 10% of particles sized in a range of from 212 to 250 μm, in a range of from about 10 to 15% of particles sized in a range of from 150 to 212 μm, in a range of from about 0.1 to 5% of particles sized in a range of from 106 to 150 μm, based on number of particles.
4 more elements
A method of surface preparation, comprising:
- introducing a blasting abrasive suspension onto a surface such that a contaminant is removed from the surface, and a treated surface forms,
- wherein the blasting abrasive suspension comprises a ferrochrome slag suspended in a carrier gas,
- wherein the ferrochrome slag has a composition of SiO2 in a range of from about 30 to 40 wt % (weight percent):
- Al2O3 in a range of from about 25 to 35 wt %;
- of Fe2O3, Cr2O3, or a combination thereof in a range of from about 10-20 wt %;
- MgO in a range of from about 15 to 25 wt %, by weight of the ferrochrome slag has a particle size in a range of from about 100 to 850 μm (micrometers),
- wherein the ferrochrome slag has a particle size distribution in a range of from about 20 to 30% of particles sized in a range of from 600 to 850 μm, in a range of from about 20 to 30% at 500 to 600 μm, in a range of from about 10 to 20% of particles sized in a range of from 425 to 500 μm, in a range of from about 15 to 20% of particles sized in a range of from 250 to 425 μm, in a range of from about 8 to 13% of particles sized in a range of from 212 to 250 μm, and in a range of from about 2 to 10% of particles sized in a range of from 150 to 212 μm, based on number of particles.
4 more elements
Dependencies are inferred from the claim text.