WO 2016/189374 A1

Method and device for treating and utilising bypass dusts

(22) 20.05.2016

(43) 01.12.2016

(57) In a method for the treatment and utilisation of bypass dusts from the cement production process, the following steps are carried out: a) bringing the bypass dust into contact with an aqueous and mixing same, in order to obtain a homogenous suspension, wherein water-soluble components of the bypass dust are dissolved in the aqueous phase; b) carrying out a solid-liquid separation, in particular a vacuum filtration or a filter press filtration, in order to separate the solid materials contained in the suspension, wherein a sol remains; c) precipitating a partial quantity of the heavy metals present in the sol and optionally Ca, and separating the sediment from the sol; d) subjecting the sol to an electrocoagulation, wherein a flocculate containing the heavy metals remaining in the sol is separated.

(71) Holcim Technology Ltd, Zürcherstrasse 156, CH-8645 Jona (CH)

(84) ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)

x

Related articles:

Issue 2018-9 US 2018/0148374 A1

Method and device for treating and utilizing bypass dusts

(22) 20.05.2016 (43) 31.05.2018 (57) 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...

more
Issue 2016-12 WO 2016/139225 A1

Method and plant for denitrifying bypass gases in a multi-stage system of mixing chambers in a plant for producing cement clinker

(22) 02.03.2016 (43) 09.09.2016 (57) The invention relates to a method and to a corresponding plant for denitrifying bypass exhaust gases (9) in a plant for producing cement clinker, wherein the plant...

more
Issue 2019-9 US 2019/0154335 A1

Method and plant for denitrifying bypass gases in a multi-stage system of mixing chambers in a plant for producing cement clinker

(22) 25.01.2019 (43) 23.05.2019 (57) A method and a corresponding plant for denitrifying bypass exhaust gases in a cement clinker production plant. Raw meal is sintered in a rotary kiln and...

more
Issue 2018-4 US2018038648 (A1)

Method and plant for denitrifying bypass gases in a multi-stage system of mixing chambers in a plant for producing cement clinker

(22) 02.03.2016 (43) 08.02.2018 (57) A method and a corresponding plant for denitrifying bypass exhaust gases in a cement clinker production plant. Raw meal is sintered in a rotary kiln and...

more
Issue 2014-4 SLOVAKIA

Complete solution for bypass dust treatment

A TEC is an innovative leading technology provider for the cement industry. In recent years, A TEC has engaged in technologies for the use of alternative fuels, chlorine bypasses and the re-use and...

more