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WO2018102894A1 - Procédé de production d'agent de soutènement céramique à partir de minerai de fer et/ou d'esters de son exploitation et/ou de rejets de son traitement par agglomération de particules fines et ultrafines - Google Patents

Procédé de production d'agent de soutènement céramique à partir de minerai de fer et/ou d'esters de son exploitation et/ou de rejets de son traitement par agglomération de particules fines et ultrafines Download PDF

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Publication number
WO2018102894A1
WO2018102894A1 PCT/BR2017/000035 BR2017000035W WO2018102894A1 WO 2018102894 A1 WO2018102894 A1 WO 2018102894A1 BR 2017000035 W BR2017000035 W BR 2017000035W WO 2018102894 A1 WO2018102894 A1 WO 2018102894A1
Authority
WO
WIPO (PCT)
Prior art keywords
waste
pellets
iron ore
tailings
ceramic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/BR2017/000035
Other languages
English (en)
Portuguese (pt)
Inventor
Fernando Gabriel DA SILVA ARAÚJO
Jefferson JANUÁRIO MENDES
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Smx Empreendimentos Consultoria Em Engenharia Ltda
Original Assignee
Smx Empreendimentos Consultoria Em Engenharia Ltda
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Smx Empreendimentos Consultoria Em Engenharia Ltda filed Critical Smx Empreendimentos Consultoria Em Engenharia Ltda
Publication of WO2018102894A1 publication Critical patent/WO2018102894A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • This invention relates to industry
  • the ceramic potant described herein must be primarily but not only iron ore and / or waste from its exploitation and / or tailings, which typically contain, as major phases, primarily iron oxides. , iron, silica and clay mineral hydroxides. Other raw materials of similar properties and origins, such as those from manganese exploitation, for example, can potentially be employed. for the same purpose, and its uses are also encompassed by this application.
  • Propellants are granular materials used as holding agents when introduced into a fractured rock mixed with a liquid. Such a liquid is used in one of the oil well drilling techniques, which consists of opening fractures in the rock through a fluid at high pressure. Some of the requirements for such an application are suitable grain size and size distribution, with good sphericity, roundness and mechanical strength,
  • the process of producing proppant from iron ore and / or sterile from its exploitation and / or from its fine and ultra-fine particulate tailings consists of the wet mixing of particles, preferably in the fraction smaller than 0.148 mm, with predefined quantities of binder, basic and energetic oxides, all these optional, followed by pelletizing agglomeration, which by the action of the surface tension of capillarity, promotes the formation of a good sphericity agglomerate, which after subjected to a specific heat treatment, has high mechanical resistance to handling.
  • Thickeners Tanks or sedimentation equipment employed in a particular type of solid-liquid separation used to increase the concentration of slurry solids to convenient values for subsequent operations such as pumping and filtering.
  • Filters Equipment of the unitary filtration process, which consists of separating a solid phase from a liquid phase. Basically, an operation of separating solids present in a pulp, in which the liquid phase is compelled to pass through a porous medium, this called filtering medium, while the solid phase, called filtration cake, forms a layer over the porous medium surface.
  • Drum or pellet disc Equipment that revolves the mixing of raw materials for pellet formation (agglomerates typically in the order of size 6mm to 20mm in diameter) and minipellets (agglomerates typically in the order of size less than 6mm in diameter) . .
  • Heat treatment furnace Equipment for the specific thermal processing of pellets and mini-pellets to obtain the Propante Ceramic product with high mechanical resistance to handling.
  • PLC Programmable Logic Controller
  • the mechanism of formation of raw propellant pellets and mini-pellets occurs from a phenomenon involving solid phases and liquid phases.
  • the solid phases are typically the mixture of iron ore fines and / or uitrafins and / or sterile from their excretion and / or from their processing tailings, additives and binders, and the liquid phase is typically water.
  • the physical process of agglomeration is due to the mechanical forces of compression and impact of the rolling of solid particles with water in the pelletizer (mixer, disc or drum), being influenced by the particle size distribution, the specific surface and the wettability of the particles, where raw material grains they undergo successive bearings, whose rotational movement and proper inclination promote agglomerate growth and later formation of propellant pellets and mini-pellets.
  • the quality of the raw propellant pellets and mini-pellets depends on the following variables: particle size distribution of the iron ore particles and / or, sterile from their exploitation and / or waste from their beneficiation and inputs; moisture in the diet; dosages of binders; rotation and inclination of the pelletizer; feed rate. These variables must ensure the proper residence time of the material within the pelletizer so that fine-grained and finely granulated pellets and mini-pellets are produced. This means that good performance of the pellet process will result in good thermal processing performance.
  • STEP 3 Thermal Processing of Propellant Pellets and Mini-Pellets.
  • This phase refers to an oven region where the pellets and mini-pellets will be prepared for future reactions that will occur in the firing phase.
  • the main typical reactions of this phase are: Thermal decomposition of carbonates, hydroxides and clays. CaO reactions with other components.
  • Thermal decomposition reactions of fluxing compounds Thermal decomposition reactions of metal sulfides. Transformation reactions of metal sulfides to sulphates. Thermal decomposition reactions of kaolinite and bentonite clay minerals.
  • the construction of the internal phase structure of the pellets and mini-pellets occurs, concurrently with the sintering reaction in the solid state, which will determine the structural density, pore structure and, as a consequence, the mechanical and permeability properties of the pellets and mini-pellets.
  • the micropellets may show a variation in the composition of mineralogical phases depending on several factors, such as the chemical and mineralogical composition of the raw material and also the additives that were used.
  • the mineralogical composition and the quality of the micropellet also depend to a large extent on the burning conditions used, because each reaction type and its products depend on the physicochemical conditions. reaction medium, such as temperature, pressure and time spent in the firing phase.
  • This application introduces the possibility of additional steps of grading size grading suitability in the grading circuit.
  • Such separation steps can be performed using any type of equipment, including sieves, rollers, mills, and can take place before entering the PCF process, at its output, or between units in series or in parallel with the process, taking your flows.
  • the suitability and agglomeration of the fine and ultrafine particles of iron ore and / or its sterile excretion and / or processing tailings, using the PCF process may be carried out simultaneously on different equipment, each acting to suit the specific grain size. This promotes greater process selectivity, allowing greater productivity and product quality.
  • this application includes circuit optimization, suitable for the ceramic proppant production process, for different mineralogies, particle size range and type of material used PCF.
  • the process has been developed and refined for various materials containing fine and ultra-fine particles of iron ore and / or sterile from their expotation and / or beneficiation tailings over 20 months, even applying to tailings. sludge, flotation and magnetic separation, among others.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

Le présent document de brevet concerne des produits et des procédés de production d'un agent de soutènement céramique à partir du minerai de fer et/ou d'esters de son exploitation et/ou de rejets de son traitement, et/ou des particules fines et ultrafines d'autres origines à propriétés similaires, par agglomération de ces matériaux, puis traitement thermique, résultant de l'association de technologies distinctes, auparavant utilisées à d'autres fins, permettant d'obtenir un matériau céramique, transformant les matériaux, y compris les rejets et les esters d'autres procédés en produits à haute valeur ajoutée, outre, bien entendu, le fait de réduire l'impact résultant de l'activité minière, avec une meilleure mise à profit des ressources minérales. La pratique est appelée à permettre, dans le futur, la réduction de la destination de rejets et d'esters au niveau de nouveaux barrages de rejets et d'empilements, outre la réutilisation de structures telles que les empilements et les vieux barrages.
PCT/BR2017/000035 2016-12-07 2017-04-10 Procédé de production d'agent de soutènement céramique à partir de minerai de fer et/ou d'esters de son exploitation et/ou de rejets de son traitement par agglomération de particules fines et ultrafines Ceased WO2018102894A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR102016028753 2016-12-07
BRBR1020160287537 2016-12-07

Publications (1)

Publication Number Publication Date
WO2018102894A1 true WO2018102894A1 (fr) 2018-06-14

Family

ID=62491735

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2017/000035 Ceased WO2018102894A1 (fr) 2016-12-07 2017-04-10 Procédé de production d'agent de soutènement céramique à partir de minerai de fer et/ou d'esters de son exploitation et/ou de rejets de son traitement par agglomération de particules fines et ultrafines

Country Status (1)

Country Link
WO (1) WO2018102894A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0116369A2 (fr) * 1983-02-07 1984-08-22 Norton Company Agent de soutènement des fractures de puits
AU579242B2 (en) * 1985-05-23 1988-11-17 Comalco Aluminium Limited Bauxite proppant

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0116369A2 (fr) * 1983-02-07 1984-08-22 Norton Company Agent de soutènement des fractures de puits
AU579242B2 (en) * 1985-05-23 1988-11-17 Comalco Aluminium Limited Bauxite proppant

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