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7581871 |
Counter-flow drum mixer asphalt plant method for two stage mixing
A counter-flow drum mixer asphalt plant equipped with a secondary feeder for introducing RAP to direct radiant heat of the combustion zone. Heated virgin aggregate and RAP in the combustion zone...
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7566162 |
Apparatus and method for a hot mix asphalt plant using a high percentage of recycled asphalt products
A hot mix asphalt plant for producing hot mix asphalt using a high percentage of RAP comprising a first dryer adapted to receive and mix virgin aggregates and RAP fines and a first burner assembly...
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7563017 |
Process for mixing congealable materials such as cement, asphalt, and glue with fibers from waste carpet
A process for making reformed fiber from waste carpet material including separating into their individual strands, in well-graded lengths by mechanically disrupting, milling and granulating the...
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7384181 |
Milled asphalt pavement recycling
A milled materials processor consists of a self contained, stationary or fully mobile thermal process plant for the thermal processing of 100% recycled asphalt pavement into new hot mix paving...
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7114843 |
Method of manufacturing a bituminous coated aggregate mix
A method of manufacturing a bituminous coated aggregate mix, said method comprising at least the following steps:
(a) course aggregate are dried by heating; (b) an intermediate mix is formed...
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7044630 |
Counter-flow asphalt plant method
A method for operating a counter-flow aggregate dryer for an asphalt plant in which primary aggregate materials are introduced into a first end of a horizontally rotating cylinder and travel to the...
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6971784 |
Process for producing fiber reinforced hot-mix asphaltic and cementitous structural materials with fiber pellets produced from carpet waste
A process for effectively mechanically disrupting fiber pellets produced from waste carpet material into their individual strands and for insertion and uniform distribution of such fibers through...
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6928891 |
Material sample preparation apparatus and method
An automated apparatus for preparing material samples includes a rotatable drum support assembly, a drum rotatably contacting the drum support assembly, a fan, and a powered drive mechanism. The...
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6860313 |
Method and device for the preparation of foundry sand
A device for preparing moulding sand. The device includes a mixer configured to operate under at least a partial vacuum and at least one feeder to introduce components to be mixed. An inlet in the...
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6832850 |
Hot-mix asphalt manufacturing system and method
A hot-mix asphalt manufacturing system includes a counter-flow rotary dryer having a combustion chamber, an inlet for dry ingredients, an outlet for hot-mix asphalt, and a pollution control device....
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6662867 |
Controlled heating of a coating material
In a process to control the heating of a coating material for a roof covering, the coating material is heated using a heat exchange medium in a continuous process. The heat exchange medium is...
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6591891 |
Method for making sand covered with bentonite, the sand, and a method for recycling molding sand for a mold using the sand covered by bentonite
Given green sand is obtained by a mixing operation that is carried out for a short period of time. Discarded sand is supplied as supplementary sand to a sand processing line, so that molding sand...
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6409951 |
Process for producing an inorganic molded product
A process for producing an inorganic molded product, which comprises a step of preparing a hardenable composition comprising 100 parts by mass of an acid metal phosphate, from 80 to 200 parts by...
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6196710 |
Dust distributor for asphalt mixing machine
An apparatus for making asphalt paving material includes a dust collection and distribution system by which aggregate dust that is collected during the heating and drying of aggregate may be...
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6164809 |
Counter-flow asphalt plant with independently rotatable dryer and mixer
A counter-flow asphalt plant with a separately controlled and operated dryer 50 and mixer 52 in which virgin aggregate, recycle material and liquid asphalt are mixed to produce an asphaltic...
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6036352 |
Method of and device for improving the quality of fresh concrete and preventing adhesion and hardening of the fresh concrete in a mixer drum of a concrete mixer truck or of a concrete mixing plant
A method of and device for improving the quality of fresh concrete and preventing adhesion and hardening of the mixed fresh concrete in a rotary mixer drum of a concrete mixer truck or a stationary...
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5988864 |
Process for producing aggregate from waste
The described process utilizes the ash from a trash-to-steam plant and a cementitous binder along with the hot output of an earth purification process and a strictly defined quantity of water in...
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5915833 |
Method and device for cooling foundry sand
A cooling apparatus for used foundry sand provided with a homogenizing and conveying apparatus in a constant vacuum with controlled water inflow and a suction point for the water vapor, the water...
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5816312 |
Method of and apparatus for reclaiming foundry sand
Salvaged foundry sand is reclaimed by introducing salvaged sand into a vacuum kneading tank, adding water and binder to the salvaged sand and kneading the salvaged sand under vacuum. A target...
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5772317 |
Counterflow drum mixer for making asphaltic concrete and methods of operation
The counterflow drum mixer includes an elevated virgin aggregate inlet end and an opposite asphaltic product discharge end. A burner lies intermediate the ends and defines a combustion volume....
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5664881 |
Counter-flow asphalt plant with multi-stage combustion zone overlapping the mixing zone
A drum mixer is provided with a rotatable cylinder in which aggregates, reclaimed asphalt pavement and liquid asphalt are mixed to produce an asphaltic composition. The drum cylinder includes a...
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5618104 |
Method for cooling white cement clinker
A method of cooling white cement clinker sintered in a rotary kiln includes the following steps: introducing the white cement clinker from the rotary kiln into a first cooling stage; comminuting...
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5607231 |
Method for operating an asphalt plant for both continuous and batch operation
A combination continuous/batch asphalt plant includes mechanisms and controls which permit it to be hot-stopped when operating in the continuous mode.
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5480226 |
Rotary drum dryer having aggregate cooled shielding flights and method for the utilization thereof
A rotary drum dryer has devices for cooling shielding flights located in the combustion zone of the drum. The devices comprise cooling flights which rotate with the drum to scoop up relatively...
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5423606 |
Batch asphalt plant having RAP weigh hopper and pugmill scavenging system
A designated amount of recycled asphalt product (RAP) is fed to the pugmill of a batch asphalt plant during the production of hot mix asphalt (HMA) at a controlled rate so as not to overload the...
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5385401 |
Process for adding recycled tire particle to asphalt
A method of incorporating used automobile tire scrap into asphalt uses a step of saturating rubber particles with an aromatic oil. The rubber particle containing oil does not absorb additional oils...
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5378059 |
Combined asphalt plant and soil remediation system
An apparatus and method for heating and drying stone aggregate used in the production of asphalt, which also remediates and disposes of contaminated soil. Aggregate is introduced into a drum...
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5330265 |
Apparatus and apparatus for mixing and cooling molding sand
A process using an improved apparatus for mixing and cooling molding sand. The apparatus including a molding sand mixer that mixes molding sand and further having an adjustable water supply...
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5322367 |
Process control for recycled asphalt pavement drum plant
A process for the production of hot mix asphalt (HMA) by the treatment of virgin material alone or adding reclaimed or recycled asphalt pavement (RAP) (up to 100% of the HMA). The HMA is first...
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5277490 |
Method and apparatus for producing bituminous mixtures
Method and apparatus for producing mixtures containing bitumen, in which the material to be treated is conveyed by the force of gravity through a slit-type space between two vertically arranged...
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5236624 |
Dispersions and emulsions
Dispersions of hydrophobic substance e.s. resin emulsions, usually having a relatively low average particle size can be continuously and speedily prepared by feed a hydrophobic substance in the...
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5201839 |
Countercurrent drum mixer with second heat source
An asphalt production system utilizing a pair of rotatable drums for producing an asphaltic composition is provided. The asphaltic composition is produced by separately heating a volume of virgin...
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5176445 |
Apparatus for decontaminating soils
An apparatus is disclosed which is capable of efficiently decontaminating soil, and which has several common components with a conventional asphalt production plant. This feature permits a...
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5152605 |
Apparatus for making cooled concrete
The apparatus for making cooled concrete of this invention produces cooled fresh concrete by cooling the aggregate (or gravel). The aggregate is cooled by immersion in a cooling water bath...
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5100239 |
Method of manufacturing concrete
Method for manufacturing concrete by mixing concrete materials including a cement, aggregate, admixture and at least one of water and ice. The aggregate is moved prior the mixing and a...
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5002398 |
Apparatus for and methods of producing a hot asphaltic material
A continuous process aggregate drying and mixing plant for producing a hot asphaltic material, such as is used for paving highways or the like, includes a combination of a drum drier and a pugmill....
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4993839 |
Method and apparatus for producing asphaltic mix
A method and apparatus for producing asphaltic mix for roadway use is disclosed, and which comprises a primary plant which is designed to be located remote from the point of use, and a separate...
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4954995 |
Device and method for preparing bituminous products
A burner (13) and a conveyor (6) for aggregates (7) into the drum (2) penetrate into the drum at opposite ends (2a, 2b). Circulation of the gases inside the drum occurs in direction opposite to...
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4932785 |
Aggregate drying system with improved aggregate dryer and mass flow apparatus
This invention relates to an improved aggregate drying apparatus and method where the dried aggregate is particularly useful for making hot mix asphalt. In accordance with the system, heat...
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4910540 |
Countercurrent asphalt drum dryer/mixer
A drum mixer having a internal combustion gas cylinder extending substantially the length of the drum mixer is provided. Hot combustion gases are generated by a flame within the cylinder. The...
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4872760 |
Method and apparatus for processing a mix, preferably concrete mix
A method according to the invention involves continuously moving a mix within a closed vessel having loading and discharge pipes at the ends thereof. The mix is subjected to oscillations during...
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4705404 |
Method and apparatus for processing mixed asphalt material utilizing broken-up used asphalt
A method as well as an apparatus for processing asphalt mixtures is provided in which broken-up used asphalt is employed and new material is added, utilizing a plurality of burner-heated drum...
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RE32206 |
Process for making asphalt concrete
A process for making asphalt concrete comprises mixing starting materials including aggregate and binder material and optionally, other additives, to a final temperature of about 60° C. to about...
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4540287 |
Asphalt recycling
This invention provides a hot-mix asphalt recycling processes for reconstituting and upgrading old road materials. In usual hot-mix plants the asphaltic material is heated by a naked flame....
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4483620 |
Regenerative heating and melting device for recovered asphalt concrete rubble
A regenerative heating and melting device is disclosed for treating asphalt concrete rubble for the recovery of an asphalt coated aggregate suitable for reuse. The apparatus includes a vertical...
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4411530 |
System and method for rapid beneficiation of Bentonite clay
A system and method for rapid beneficiation of bentonite clay is disclosed. Beneficiation of the bentonite clay occurs through oxidation of structural ferrous iron. For rapid beneficiation,...
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4387996 |
Batch method of recycling asphaltic concrete
A batch method of producing asphalt-aggregate composition having a temperature of at least about 200° F. and at least about 20% used asphaltic concrete comprises heating solid particles of the...
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4361405 |
Method and apparatus for preparing, more particularly for the cooling and mixing of moulding sand
Method and apparatus for the preparation, more particularly for the cooling nd mixing of moulding sand. The method includes the steps of cooling used sand, cleaning the sand where appropriate, and...
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4329090 |
Employing quicklime in stabilizing surface layers of the earth
This specification discloses method and apparatus for treating surface layers of the earth to obtain stabilization, build strength and permeability characteristics; characterized by slaking...
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4326809 |
Recycling apparatus for asphaltic concrete
An improved apparatus for recycling asphaltic concrete comprises a rotatable drum having a first port at one end open to atmosphere, a burner adjacent the first end, a second port at a second end...
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