"patent us8043426 method for treating cement kiln dust"

CEMENT KILN DUST TREATMENT SYSTEM AND METHOD

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-earth metal ...

Influence of bacterial treated cement kiln dust on the ...

This paper reports results of a study conducted to assess the properties of cement kiln dust (CKD) blended cement concretes. Type I and Type V cement concrete specimens were prepared with 0, 5, 10 ...

C. POLING | Senior Project Manager | B.Eng, MSci ...

Patent. Full-text available. Aug 2010; C. Poling. 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 ...

Treatment Or Removal Of Alkali ...

2015-7-6 · Abstract: An exhaust gas treatment method including: (A) a step of treating exhaust gas from cement manufacturing equipment by using a dust collector 9 to collect dust containing chlorinated organic compounds, and discharging the exhaust gas after the treatment by the dust collector 9, and (B) a step of charging all or part of the dust ...

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 ...

US8043426B2

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.

Bacterial treatment of alkaline cement kiln dust using ...

2016-1-1 · 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 ...

US Patent Application for Treatment Method for …

2009-12-8 · 6. A method of treating heavy metal-containing flue gas comprising exposing the heavy metal-containing flue gas to calcium carbonate, magnesium carbonate, magnesium sulfite, ground glass blast furnace slag (GGBFS), lime kiln dust, cement kiln dust, and mixtures of these, and then exposing the thus-exposed heavy metal-containing flue gas to soda ash (Na2CO3), nahcolite (NaHCO3), trona …

(PDF) Influence of Bacterial-Treated Cement Kiln Dust on ...

Cement kiln dust (CKD), a waste by-product, is a major problem at many cement manufacturing plants because of high alkalinity, metals, and sulfates. CKD possesses the same cementitious characteristics as those of cement, but the use of high-alkaline

(PDF) Influence of bacterial treated cement kiln dust on ...

Influence of bacterial treated cement kiln dust on the properties of concrete. Download. Related Papers. Influence of Bacterial-Treated Cement Kiln Dust on Strength and Permeability of Concrete. By Kunal Garg. Utilization of cement kiln dust (CKD) in cement mortar and concrete—an overview.

Effect of Modified Kiln Dust and a Cationic Surfactant on ...

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 ...

Treatment of cement kiln flue dust

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

2011-8-18 · Cement kiln dust treatment system and method. (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…

Influence of bacterial treated cement kiln dust on the ...

2014-2-15 · Cement kiln dust (CKD) is fine powdery material of grey-black in color and relatively uniform in size. Table 3 represents the physical properties of CKD compared with literature published. As CKD is derived from same raw materials as cement clinker, despite the fact that it has similar chemical composition to that of ordinary Portland cement, significant variation in physical and chemical ...

Beneficial Uses of Cement Kiln Dust | Request PDF

Cement kiln dust (CKD) is an alkali-rich waste derived from cement manufacture, which is normally sent to landfills if not used for other beneficial reuse products. The past decade has seen ...

Patents Assigned to Holcim Technology Ltd.

2019-7-9 · Abstract: A method for treating and utilizing bypass dusts from a cement production process involves a) contacting the bypass dust with an aqueous phase and mixing the same to obtain a suspension, wherein water-soluble components of the bypass dust are dissolved in the aqueous phase; b) performing a solid/liquid separation, in particular a ...

Cement kiln dust treatment system and method [Patent]

2021-9-8 · Patents food and Agro-Industry Summary & Abstract Standard & Regulation Training news Q & A Current awareness service Recycling Database Q&A Interesting Articles Information Repacking Compiled File Check Standard eContent Standard Alert

A method to control gelation of cement kiln dust

2019-1-2 · 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...

Recycling of high volumes of cement kiln dust in bricks ...

2017-2-1 · Cement kiln dust was obtained from El-Suez Cement Company, Egypt. The density of CKD was 3.12 t/m 3, which is comparable to that of cement. Table 1 depicts the chemical composition of CKD. The used CKD constituted mainly of CaO accompanied with significant anions of chloride and sulfate.

US20040040472A1

A method of recycling cement kiln dust (CKD) generated during the direct manufacturing of cement. The recycling process utilizes the creation of a flowable slurry comprising CKD, a process aid, optionally other raw materials and water. The process aid is selected from the group consisting of sucrose, raffinose, lignin, methylglucopyranoside, lactose, fructose, sodium polyphosphate, trehalose ...

US7789944B2

A treatment system to efficiently remove lead from dust contained in extracted cement kiln combustion gas while reducing facility and running costs. A treatment system 1 comprising: a probe 3 for extracting a part of combustion gas, while cooling it, from a kiln exhaust gas passage, which runs from an inlet end of a cement kiln to a bottom cyclone; a classifier 5 for separating coarse powder ...

Method of treating cement kiln dust for recovery and ...

1999-2-10 · 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 …

Cement kiln dust treatment system and method

2011-8-18 · 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 from the cement kiln dust to create a heavy-metal-containing stream; treating …

(PDF) Green technology for the treatment of highly ...

Gebhardt, R.F. (2001): Method of heating cement kiln dust for reeovery and recycle. US Patent -6331207. Standard Methods for the Examination of Water and llastewoter

"Method for Treating Particulate Material" by Abdel …

2014-5-13 · 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 [Patent]

2020-5-5 · ระเบียบการใช้ห้องสมุด บริการสารสนเทศเบ็ดเสร็จ บริการยืม-คืน ตรวจสอบเอกสารทาง โทรศัพท์ โทรสาร อีเมล

The 3Rs and cement kiln dust: Opportunities for reduction ...

1997-12-31 · The 3Rs and cement kiln dust: Opportunities for reduction, reuse and recycling

METHOD FOR TREATING CEMENT KILN DUST

2009-11-19 · Patent application title: METHOD FOR TREATING CEMENT KILN DUST Inventors: Abdel-Mohsen Onsy Mohamed Maisa Mabrouk El-Gamal Agents: LOWE HAUPTMAN HAM & BERNER, LLP Assignees: Origin: ALEXANDRIA, VA US IPC8 Class: AC04B700FI USPC Class: 106638 Patent application number: 20090283016 Abstract: A method for treating cement kiln dust containing alkaline …

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

2011-10-25 · 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 a fluidized bed reactor.

Method for Treating Particulate Material

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 carried out in a fluidized bed reactor.

Disposal and Utilization of Waste Kiln Dust From Cement ...

----- EPA-670/2-75-043 May 1975 DISPOSAL AND UTILIZATION OF WASTE KILN DUST FROM CEMENT INDUSTRY BY Thomas A. Davis Don B. Hooks Southern Research Institute Birmingham, Alabama 35205 Project No. R-801872 Program Element No. 1BB036 Project Officer Edmond Lomasney U.S. Environmental Protection Agency Region IV Atlanta, Georgia 30309 NATIONAL …

D. Chad Brenneis''s research works | Halliburton, Texas and ...

D. Chad Brenneis''s 11 research works with 4 citations and 112 reads, including: Methods for determining reactive index for cement kiln dust, associated compositions and methods of use

Effect of cement kiln dust addition on activated sludge ...

2012-4-1 · 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.

An Innovative Method for Mitigating Impacts from Acid ...

2021-6-10 · An Innovative Method for Mitigating Impacts from Acid-Producing Rock By Jim Gusek, P.E. Golder Associates Inc. ... Lime kiln dust or cement kiln dust ... Patent issued January, 2012