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1. (WO2018195624) MANUFACTURING PROCESS OF POZZOLAN WITH COLOR CHANGE AND POZZOLAN THUS OBTAINED
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Pub. No.: WO/2018/195624 International Application No.: PCT/BR2018/050120
Publication Date: 01.11.2018 International Filing Date: 23.04.2018
IPC:
C04B 7/47 (2006.01) ,C04B 14/16 (2006.01) ,C10L 5/02 (2006.01)
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
7
Hydraulic cements
36
Manufacture of hydraulic cements in general
43
Heat treatment, e.g. precalcining, burning, melting; Cooling
47
Cooling
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
14
Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
02
Granular materials
04
Silica-rich materials; Silicates
14
Minerals of vulcanic origin
16
porous, e.g. pumice
C CHEMISTRY; METALLURGY
10
PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
L
FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K123; LIQUEFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
5
Solid fuels
02
Briquettes consisting mainly of carbonaceous materials of mineral origin
Applicants:
DYNAMIS ENGENHARIA E COMÉRCIO LTDA. [BR/BR]; Rua Padre Chico, 85, cj 32, Perdizes 05008-010 São Paulo - SP, BR
Inventors:
FERREIRA, Guilherme Martins; BR
FABIANI, Luis Filipe Von Rainer; BR
DE PINHO, Luiz Felipe; BR
BORGES, Rodrigo De Sousa; BR
Agent:
ARIBONI, FABBRI E SCHMIDT SOCIEDADE DE ADVOGADOS; Rua Guararapes, 1909 7º Andar - Brooklin 04561-004 São Paulo - SP, BR
Priority Data:
BR 10 2017 008635 626.04.2017BR
BR 10 2018 006332 428.03.2018BR
Title (EN) MANUFACTURING PROCESS OF POZZOLAN WITH COLOR CHANGE AND POZZOLAN THUS OBTAINED
(FR) PROCÉDÉ DE FABRICATION DE POUZZOLANE AVEC CHANGEMENT DE COULEUR ET POUZZOLANE AINSI OBTENUE
Abstract:
(EN) The present invention refers to a manufacturing process of artificial pozzolan which has the final color gray. In order to perform the processes in the desired way, the kiln atmosphere shall contain low oxygen concentration and the presence of reducing agents. However the presence of carbon monoxide at the kiln outlet is not desirable, due to environmental impacts and the increase in specific heat consumption of the kiln. So the process described in this invention comprises the following steps: heating (1), which consists of heating the raw materials to a temperature between 100-350°C until drying of the material to a moisture mass fraction of 0-5% (wet basis); mixing (2), which consists of mixing the dry raw materials from the heating process with the right proportion of fuel, from 1% to 5% in mass fraction, according to the concentration of hematite present in the raw material; calcining (3), which consists of heating the fuel and raw materials blend to a temperature between 700-900°C, with oxygen concentration between 1-5% and, finally, cooling (4), which consists of an initial step of rapid decrease in pozzolan temperature until 600°C and a final step of slow decrease in pozzolan temperature until 120°C.
(FR) La présente invention concerne un procédé de fabrication de pouzzolane artificielle qui a comme couleur finale le gris. Afin d'effectuer les procédés de la manière souhaitée, l'atmosphère de four doit contenir une faible concentration en oxygène et des agents réducteurs. Cependant, la présence de monoxyde de carbone au niveau de la sortie du four n'est pas souhaitable, du fait des impacts environnementaux et de l'augmentation de la consommation de chaleur spécifique du four. Le procédé décrit dans la présente invention comprend les étapes suivantes : chauffage (1), qui consiste à chauffer les matières premières à une température comprise entre 100 et 350 °C jusqu'à séchage du matériau jusqu'à une fraction massique d'humidité de 0 à 5 % (base humide) ; mélange (2), qui consiste à mélanger les matières premières sèches du processus de chauffage avec la proportion correcte de carburant, de 1 % à 5 % en fraction massique, en fonction de la concentration d'hématite présente dans la matière première ; calcination (3), qui consiste à chauffer le mélange de combustible et de matières premières à une température comprise entre 700 et 900 °C, avec une concentration en oxygène comprise entre 1 et 5 % et, enfin, refroidissement (4), qui consiste en une étape initiale de diminution rapide de la température de la pouzzolane jusqu'à 600 °C et une étape finale de diminution lente de la température de pouzzolane jusqu'à 120° C.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)