# US 2014/0190128 A1 · Methods for Improving the Flowability of Asphalt Particles

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- Number: US 2014/0190128 A1
- Document ID: US20140190128A1
- Status: Published application
- Kind: A1
- Application number: 14/240,014
- Filed: 2012-09-19
- Published: 2014-07-10
- Earliest claimed: 2011-09-22
- Assignees: Schlumberger Technology Corporation
- Applicants: Schlumberger Technology Corporation
- Inventors: Mathew M. Samuel; Deepak Khatri; Roger Keese; Robert Williams
- Web page: https://patentgrep.com/patent/US20140190128A1

## CPC

- C10C 3/00: Working-up pitch, asphalt, bitumen {(compositions of asphalts and other bitumenous materials C08L95/00)}
- B01J 2/30: using agents to prevent the granules sticking together; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- C08J 3/124: {Treatment for improving the free-flowing characteristics}
- C08L 95/00: Compositions of bituminous materials, e.g. asphalt, tar, pitch
- C08L 2555/52: Aggregate, e.g. crushed stone, sand, gravel or cement
- C10C: WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID (compositions of bituminous materials C08L95/00; carbon filaments by decomposition of organic filaments D01F9/14)
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

The flowability of asphalt particles may be improved by mixing the particles with comprises further compound comprises Portland cement, calcium aluminate cement, fly ash, blast furnace slag, lime/silica blends, silica, ground limestone, cement kiln dust, chemically bonded phosphate ceramics, zeolites, geopolymers, cellulose, starch, calcium carbonate, colloidal silica, aluminosilicates, and combinations thereof. Treating the asphalt particles with at least one of these compounds inhibits caking during storage and enhances transportability.

## Claims

### Claim 1

A method for improving the flowability of asphalt particles, comprising:
(i) providing asphalt particles with a penetration grade below about 20; and
(ii) mixing with at least one further compound comprising Portland cement, calcium aluminate cement, fly ash, blast furnace slag, lime/silica blends, silica, ground limestone, cement kiln dust, chemically bonded phosphate ceramics, zeolites, geopolymers, cellulose, starch, calcium carbonate, colloidal silica, aluminosilicates, and combinations thereof.

### Claim 2 (depends on 1)

The method of claim 1, wherein the asphalt melting point is higher than about 99° C.

### Claim 3 (depends on 1)

The method of claim 1, wherein the size of the asphalt particles is smaller than about 2500 μm.

### Claim 4 (depends on 1)

The method of claim 1, wherein the specific gravity of the asphalt is between about 0.95 and 1.15.

### Claim 5 (depends on 1)

The method of claim 1, wherein the further compound comprises hard asphalt particles is blended with Portland cement, fly ash, blast furnace slag, lime/silica blends, silica, ground limestone or combinations thereof

### Claim 6 (depends on 1)

The method of claim 1, wherein the anti-caking agent concentration is between about 0.1% and 10.0% by weight of asphalt particles.

### Claim 7

A method for storing asphalt particles, comprising:
(i) providing asphalt particles with a penetration grade below about 20;
(ii) mixing the particles with at least one further compound comprising Portland cement, calcium aluminate cement, fly ash, blast furnace slag, lime/silica blends, silica, ground limestone, cement kiln dust, chemically bonded phosphate ceramics, zeolites, geopolymers, cellulose, starch, calcium carbonate, colloidal silica, aluminosilicates, and combinations thereof; and
(iii) placing the blend in a storage container.

### Claim 8 (depends on 7)

The method of claim 7, wherein the asphalt melting point is higher than about 99° C.

### Claim 9 (depends on 7)

The method of claim 7, wherein the size of the asphalt particles is smaller than about 2500 μm.

### Claim 10 (depends on 7)

The method of claim 7, wherein the specific gravity of the asphalt is between about 0.95 and 1.15.

### Claim 11 (depends on 7)

The method of claim 7, wherein the further compound comprises hard asphalt particles is blended with Portland cement, fly ash, blast furnace slag, lime/silica blends, silica, ground limestone or combinations thereof

### Claim 12 (depends on 7)

The method of claim 7, wherein the anti-caking agent concentration is between about 0.1% and 10.0% by weight of asphalt particles

### Claim 13 (depends on 7)

The method of claim 7, wherein the temperature in the storage container is held below about 99° C.

### Claim 14

A method for transporting asphalt particles, comprising:
(i) providing asphalt particles with a penetration grade below about 20;
(ii) mixing the particles with at least one further compound comprising Portland cement, calcium aluminate cement, fly ash, blast furnace slag, lime/silica blends, silica, ground limestone, cement kiln dust, chemically bonded phosphate ceramics, zeolites, geopolymers, cellulose, starch, calcium carbonate, colloidal silica, aluminosilicates, and combinations thereof;
(iii) placing the blend in a transport container; and
(iv) transporting the blend from a first location to a second location.

### Claim 15 (depends on 14)

The method of claim 14, wherein the asphalt melting point is higher than about 99° C.

### Claim 16 (depends on 14)

The method of claim 14, wherein the size of the asphalt particles is smaller than about 2500 μm.

### Claim 17 (depends on 14)

The method of claim 14, wherein the specific gravity of the asphalt is between about 0.95 and 1.15.

### Claim 18 (depends on 14)

The method of claim 14, wherein the further compound comprises hard asphalt particles is blended with Portland cement, fly ash, blast furnace slag, lime/silica blends, silica, ground limestone or combinations thereof

### Claim 19 (depends on 14)

The method of claim 14, wherein the anti-caking agent concentration is between about 0.1% and 10.0% by weight of asphalt particles.

### Claim 20 (depends on 14)

The method of claim 14, wherein the temperature in the transport container is held below about 99° C.