Customer case aboutpatent us8043426 method for treating cement kiln dust

patent us8043426 method for treating cement kiln dust

US8043426B2 Method for treating cement kiln dust

A method for treating cement kiln dust containing alkaline metal salts includes the steps of hydration (formation of calcium hydroxide), dehydration i.e. drying, fractionation by sieving and carbonation (reaction of the fractionated moistened cement kiln dust) with CO 2 gas in a fluidized bed reactor.

"Method for Treating Cement Kiln Dust" by Abdel-Mohsen

A method for treating Cement kiln dust Containing alkaline metal salts includes the steps of hydration (formation of calcium hydroxide), dehydration i.e. drying, fractionation by (56) References Cited sieving and carbonation (reaction of the fractionated moistened cement kiln dust) With CO2 gas in

US6331207B1 Method of treating cement kiln dust for

Fresh or stockpiled cement kiln dust is moistened with sufficient water so that the amount of total free and combined water relative to dust is about 3 parts water to 1 part dust by mass, or less. The wet solids are treated with carbon dioxide to convert compounds, such as calcium hydroxide, to carbonates, such as calcium carbonate. The degree of carbonation is controlled so that the

CEMENT KILN DUST TREATMENT SYSTEM AND METHOD

Feb 26, 2015 A method for treating cement kiln dust is provided. The method includes the steps of receiving cement kiln dust (CKD) from a kiln; heating the collected CKD; forming a gas stream of vaporized metal and CKD by sufficient heating to separate at least one heavy metal from the collected CKD stream to create a cleaned CKD stream and a metal stream; providing a water soluble alkaline

methods of dust removal in cement industry

Patent US8043426 Method for treating cement kiln dust Google Oct 25, 2011 A method for treating waste cement kiln dust according to claim 1 which Cement kiln dust is a major problem at many cement manufacturing plants. The methods include leaching the dust with water to remove alkalis:. Read more

Patents Assigned to MERCUTEK LLC Justia Patents Search

Jan 23, 2018 Justia Patents Patents and Patent Application Resources. Abstract: A system and method for treating cement kiln dust is provided. The method includes the steps of receiving cement kiln dust (CKD) from a kiln; heating the collected CKD; forming a gas stream of vaporized metal and CKD by sufficient heating to separate at least one heavy metal from the collected CKD stream to

"Method for Treating Cement Kiln Dust" by Abdel-Mohsen

A method for treating Cement kiln dust Containing alkaline metal salts includes the steps of hydration (formation of calcium hydroxide), dehydration i.e. drying, fractionation by (56) References Cited sieving and carbonation (reaction of the fractionated moistened cement kiln dust) With CO2 gas in

Method of treating cement kiln dust for recovery and

Another method for treating cement kiln dust is described in Patzias (U.S. Pat. No. 2,991,154, July 1961) wherein kiln dust is mixed with water in a ratio of 2.5 to 3 parts water to 1 part dust, with the resulting mixture heated to about 358° F. in a closed vessel at a pressure of 150 psi for about 30 minutes.

CEMENT KILN DUST TREATMENT SYSTEM AND METHOD

Feb 26, 2015 A method for treating cement kiln dust is provided. The method includes the steps of receiving cement kiln dust (CKD) from a kiln; heating the collected CKD; forming a gas stream of vaporized metal and CKD by sufficient heating to separate at least one heavy metal from the collected CKD stream to create a cleaned CKD stream and a metal stream; providing a water soluble alkaline

Patents Assigned to MERCUTEK LLC Justia Patents Search

Jan 23, 2018 Justia Patents Patents and Patent Application Resources. Abstract: A system and method for treating cement kiln dust is provided. The method includes the steps of receiving cement kiln dust (CKD) from a kiln; heating the collected CKD; forming a gas stream of vaporized metal and CKD by sufficient heating to separate at least one heavy metal from the collected CKD stream to

methods of dust removal in cement industry

Patent US8043426 Method for treating cement kiln dust Google Oct 25, 2011 A method for treating waste cement kiln dust according to claim 1 which Cement kiln dust is a major problem at many cement manufacturing plants. The methods include leaching the dust with water to remove alkalis:. Read more

Cement kiln dust treatment system and method [Patent]

Patent No. US 8,876,967: Title : Cement kiln dust treatment system and method: Invenntor : Peter D’Amico [US] ; Christopher Poling [US] ; Thomas Lesniak [US] Assignee : Mercutek LLC. [US] Abstract : A method for treating cement kiln dust is provided.

"Method for Treating Particulate Material" by Abdel-Mohsin

May 13, 2014 This invention describes the use of a fluidized bed reactor in the carbonation of a solid, inorganic and alkaline particulate material which contains alkaline metal salts. It also describes a method for treating cement kiln dust (CKD) containing alkaline metal salts. The treatment method comprises two steps: (a) a hydration step; and (b) a carbonation step, wherein the carbonation step is

Cement kiln dust treatment system and method Cement Lime

(43) 24.11.2016 (57) A system and method for treating cement kiln dust is provided. The method includes the steps of receiving cement kiln dust (CKD) from a kiln; heating the collected CKD; forming a gas stream of vaporized metal and CKD by sufficient heating to separate at least one heavy metal from the collected CKD stream to create a cleaned CKD stream and a metal stream; providing a water

Cement kiln dust treatment system and method Cement Lime

(22) 18.08.2011 (43) 31.07.2017 (57) Summary of the corresponding patent WO2012024511 (A1): A method for treating cement kiln dust is provided. The method includes the steps of receiving cement kiln dust (CKD) from a kiln; heating the collected CKD; forming a gas stream of vaporized metal and CKD by sufficient heating to separate at least one heavy metal from the collected CKD stream to

Cement kiln dust treatment system and method Cement Lime

(22) 18.08.2011 (43) 14.06.2017 (57) The invention relates to a method for treating cement kiln dust comprising at least one heavy metal. The method comprises the steps of: separating the heavy metal from the cement kiln dust to create a heavy-metal-containing stream; treating the heavy metal stream with a treating fluid containing at least one of an alkaline-earth metal sulfide and an

Effect of cement kiln dust addition on activated sludge

Apr 01, 2012 Cement kiln dust (CKD) is useless byproduct from the cement industry and a significant resource value for lime substituting. In this paper work, CKD is used as a chemical precipitant for activated sludge process pilot plant without using primary settling at different temperature ranges (30–35) °C and (15–20) °C.

Treatment of cement kiln flue dust Free Patents Online

This invention concerns a cement kiln flue dust treatment process comprising: in a first stage treating the dust with fresh water at an elevated temperature for such time as to dissolve the alkali metal chlorides, simultaneously carbonating to convert calcium hydroxide in solution to insoluble calcium carbonate, then treating the slurry thus formed in a second stage with additional water at an

(PDF) MINIMIZATION OF CEMENT KILN DUST

Cement Kiln Dust (CKD) is a significant by-product material of the cement manufacturing process. Over the past several years dramatic advances have been achieved in the management

Method and apparatus for disposing of waste dust generated

A method of disposing of undesirable chemical compounds in waste dust generated in a first kiln in the manufacture of cement clinker by using the dust and slag as the feedstock material to a second kiln, heating the feedstock material in an oxidizing atmosphere, and raising the heat sufficient to diffuse the waste dust and the slag to form a hydraulic product such as cement clinker and lime

Method of treating cement kiln dust for recovery and

Another method for treating cement kiln dust is described in Patzias (U.S. Pat. No. 2,991,154, July 1961) wherein kiln dust is mixed with water in a ratio of 2.5 to 3 parts water to 1 part dust, with the resulting mixture heated to about 358° F. in a closed vessel at a pressure of 150 psi for about 30 minutes.

Treatment of cement kiln flue dust Free Patents Online

This invention concerns a cement kiln flue dust treatment process comprising: in a first stage treating the dust with fresh water at an elevated temperature for such time as to dissolve the alkali metal chlorides, simultaneously carbonating to convert calcium hydroxide in solution to insoluble calcium carbonate, then treating the slurry thus formed in a second stage with additional water at an

Cement kiln dust treatment system and method Cement Lime

(43) 24.11.2016 (57) A system and method for treating cement kiln dust is provided. The method includes the steps of receiving cement kiln dust (CKD) from a kiln; heating the collected CKD; forming a gas stream of vaporized metal and CKD by sufficient heating to separate at least one heavy metal from the collected CKD stream to create a cleaned CKD stream and a metal stream; providing a water

Cement kiln dust treatment system and method [Patent]

Patent No. US 8,876,967: Title : Cement kiln dust treatment system and method: Invenntor : Peter D’Amico [US] ; Christopher Poling [US] ; Thomas Lesniak [US] Assignee : Mercutek LLC. [US] Abstract : A method for treating cement kiln dust is provided.

"Method for Treating Particulate Material" by Abdel-Mohsin

May 13, 2014 This invention describes the use of a fluidized bed reactor in the carbonation of a solid, inorganic and alkaline particulate material which contains alkaline metal salts. It also describes a method for treating cement kiln dust (CKD) containing alkaline metal salts. The treatment method comprises two steps: (a) a hydration step; and (b) a carbonation step, wherein the carbonation step is

Cement kiln dust treatment system and method Cement Lime

(22) 18.08.2011 (43) 31.07.2017 (57) Summary of the corresponding patent WO2012024511 (A1): A method for treating cement kiln dust is provided. The method includes the steps of receiving cement kiln dust (CKD) from a kiln; heating the collected CKD; forming a gas stream of vaporized metal and CKD by sufficient heating to separate at least one heavy metal from the collected CKD stream to

Bacterial treatment of alkaline cement kiln dust using

Jan 01, 2016 Cement kiln dust, a waste byproduct, is generated during the manufacturing of cement clinker. During clinker production in a kiln, volatile components such as sulfates, alkalis (K 2 O and Na 2 O), chlorides, etc., are drawn toward CKD and make it alkaline, thus restrict CKD reuse in a cement kiln. Huge amounts of CKD are dumped in landfill

Method and device for treating and utilizing bypass dusts

Cement kiln dust treatment system and method (22) 18.08.2011 (43) 14.06.2017 (57) The invention relates to a method for treating cement kiln dust comprising at least one heavy metal. The method comprises the steps of: separating the heavy metal...

Effect of cement kiln dust addition on activated sludge

Apr 01, 2012 Cement kiln dust (CKD) is useless byproduct from the cement industry and a significant resource value for lime substituting. In this paper work, CKD is used as a chemical precipitant for activated sludge process pilot plant without using primary settling at different temperature ranges (30–35) °C and (15–20) °C.

(PDF) MINIMIZATION OF CEMENT KILN DUST

Cement Kiln Dust (CKD) is a significant by-product material of the cement manufacturing process. Over the past several years dramatic advances have been achieved in the management

Influence of bacterial treated cement kiln dust on the

Mohamed AMO, El-Gamal MM. Method for treating cement kiln dust. US Patent 8,043,426 B2; 2011. Method of treating cement kiln dust for recovery and recycle. US Patent 6331207; 2001.

Craig W. Roddy's research works Halliburton, Texas and

Methods and compositions are disclosed that comprise cement kiln dust having a mean particle size that has been altered. An embodiment discloses a method of preparing cement kiln dust comprising

Influence of bacterial treated cement kiln dust on the

Feb 15, 2014 Cement kiln dust has the potential for reuse in many different ways, but the cement making process is the best way to reuse this by-product material and approximately 60–67 percent (8–8.4 million tons) of the total CKD generated in United States is used in this way . The most common beneficial uses of CKD are cement replacement, soil

Bacterial treatment of alkaline cement kiln dust using

Cement kiln dust, a waste byproduct, is generated during the manufacturing of cement clinker. During clinker production in a kiln, volatile components such as sulfates, alkalis (K 2 O and Na 2 O), chlorides, etc., are drawn toward CKD and make it alkaline, thus restrict CKD reuse in a cement kiln. Huge amounts of CKD are dumped in landfill

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