US 2023/0256566 A1 · USAGE OF FERROCHROME SLAG WITH OPTIMIZED PARTICLE SIZE AS A BLASTING ABRASIVE

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.

Claims14

Dependent claims

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).

2 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, and
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).

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/648,056Filed 14 Jan 2022

Published

17 Aug 2023

Term ends

Not estimatedThe source records don’t support an estimate.

Classification14 codes

B24C 11/00
Selection of abrasive materials or additives for abrasive blasts
B24C 1/086
For polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives: descaling; Removing coating films
B24C 9/006
Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material: treatment of used…
C04B 33/138
Waste materials; Refuse ; Residues: from metallurgical processes, e.g. slag, furnace dust, galvanic waste

Usage of ferrochrome slag with optimized particle size as a blasting abrasive

Life of this patent

Usage of ferrochrome slag with optimized particle size as a blasting abrasive

Life of this patent

Abstract

Claims14