WO2017103553A1 - Granulés de boue rouge - Google Patents

Granulés de boue rouge Download PDF

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Publication number
WO2017103553A1
WO2017103553A1 PCT/GB2015/054091 GB2015054091W WO2017103553A1 WO 2017103553 A1 WO2017103553 A1 WO 2017103553A1 GB 2015054091 W GB2015054091 W GB 2015054091W WO 2017103553 A1 WO2017103553 A1 WO 2017103553A1
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WIPO (PCT)
Prior art keywords
pellets
red mud
slurry
heated
clay
Prior art date
Application number
PCT/GB2015/054091
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English (en)
Inventor
Christopher Hilton DRAYSON
Alexander James Hilton DRAYSON
Original Assignee
Red Media Technologies Lmited
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Publication date
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Priority to PCT/GB2015/054091 priority Critical patent/WO2017103553A1/fr
Publication of WO2017103553A1 publication Critical patent/WO2017103553A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/132—Waste materials; Refuse; Residues
    • C04B33/1321—Waste slurries, e.g. harbour sludge, industrial muds
    • C04B33/1322—Red mud
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/04—Clay; Kaolin
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/132—Waste materials; Refuse; Residues
    • C04B33/1324—Recycled material, e.g. tile dust, stone waste, spent refractory material
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/30—Drying methods
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C04B35/111—Fine ceramics
    • C04B35/1115—Minute sintered entities, e.g. sintered abrasive grains or shaped particles such as platelets
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62625—Wet mixtures
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
    • C04B35/62675—Thermal treatment of powders or mixtures thereof other than sintering characterised by the treatment temperature
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62695—Granulation or pelletising
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/6303—Inorganic additives
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
    • C04B2235/448—Sulphates or sulphites
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74—Physical characteristics
    • C04B2235/78—Grain sizes and shapes, product microstructures, e.g. acicular grains, equiaxed grains, platelet-structures
    • 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
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes

Definitions

  • This invention relates to a process for the production of pellets comprising red mud and also to pellets formed using that process. This invention seeks to address the problems associated with red mud disposal by producing pellets which can be used for other purposes.
  • Red mud (sometimes referred to as "bauxite residue") is a bi-product of the aluminium extraction "Bayer” process. Due to its high level of alkalinity it is a hazardous waste product which cannot be disposed of easily. Red mud can be dried but the energy required to do so is vast and thus drying to solve the disposal issue is a non-economical option. Moreover, drying does not completely resolve the problem since the alkalinity of the red mud remains unchanged. Conventionally, red mud is distributed into dedicated "ponds" which are essentially areas of land solely for the purposes of containment; this thereby renders the land toxic and unsuitable for other uses.
  • waste contamination affects many industrial processes. Such problems include, the presence of phosphate in waste water which leads to difficulty in environmental disposal; the presence of high levels of sulphuric acid in water affected by acid mine drainage; and odour emitted from industrial effluent. It would be highly beneficial to produce a product utilising red mud which can be used in the treatment of waste contamination caused by such industrial processes.
  • a process for the production of red mud pellets comprising the steps of: (a) forming a slurry comprising a mixture of red mud, clay and optionally water;
  • Clay serves as a binding agent for the red mud base media.
  • Various types of clay can be used, but brick clay, which is a mix of clay and shale has been found to be highly suitable.
  • the use of the red mud waste material benefits the environment as it serves to lower the level thereof that is sent to dedicated ponds for storage.
  • step (a) The optional requirement for the addition of water in step (a) and/or the amount thereof may depend on the level of water contained in the red mud. If the moisture content of the red mud is high it may be unnecessary to include water as an optional process in step (a) in order to form slurry of sufficient viscosity. In a preferred arrangement the moisture content of the slurry may be within the range 12-16% and ideally 15%.
  • the adjusting of the water content of the slurry in step (b) may comprise drying the slurry to a particular level to enable pellets to be formed. This may be achieved by applying heat to the slurry.
  • the red mud may be treated to ensure that it is chemically neutral. Such treatment could take place prior to the mixing of the red mud with other components in step (a). In this way the process may further comprises an additional step, prior to step (a), of neutralising the red mud. Alternatively, treatment of the red mud could be effected simultaneously with the mixing in step (a) or thereafter - prior to formation of the pellets in step (d).
  • Neutralisation may be carried out using any suitable process.
  • Preferably neutralisation is carried out chemically by, for example, adding an acidic substance to the red mud.
  • the step of neutralising may comprise treating the red mud with chlorides.
  • the step of neutralising preferably comprises mixing the red mud with gypsum. Gypsum is more cost effective than chlorides and has been shown not adversely to affect the performance of the resultant pellets.
  • the Applicants have discovered that the use of gypsum as a neutraliser has improved the quality of the resultant pellets, particularly when used in the treatment of waste water to recover phosphate.
  • the process may require an additional step of adjusting the pH of the slurry. This is because the slurry may be too alkaline due to the nature of red mud or because the slurry may be too acidic, possibly as a result of neutralisation of the red mud, if such a step is carried out.
  • the pH may be adjusted prior to the adjusting the water content of the slurry in step (b) and may be carried out together with the mixing of the components in step (a) or indeed after step (a) has been performed.
  • the pH may be adjusted by mixing the slurry with an acidic or alkaline substance. Where the slurry is too alkaline, preferably the substance used to adjust the pH is citric acid.
  • the citric acid may be in powdered form as this could assist with the solidification of the mixture.
  • a pH of 7.5 is preferably the target level in order effectively to treat waste water.
  • the pH is about 9.5.
  • pellets formed will depend, in part, on the desired use. Generally, it has been found that smaller pellets provide greater effectiveness in waste contamination treatment. For most applications, it is suitable to form pellets which are generally 1 cm 3 in size. Preferably, the pellets are less than 1 cm 3 in size.
  • the pellet may be any shape but is desirably generally cuboidal.
  • the pellet size and/or shape can change when the pellets are heated in step (d) depending on the particular heating technique employed or other factors (e. g., the pellets can be broken).
  • the pellet sizes and shapes referred to above relate to the pellet sizes and shapes after the pellets have been heated in step (d).
  • the pellets Preferably, the pellets have a size after being heated in step (d) that is around the same as the size of the pellets prior to such heating.
  • Heating of the pellets may be carried out in step (d) by a refractory sagger.
  • the pellets are heated in step (d) by a rotary kiln or a tunnel kiln such as a single brick tunnel kiln.
  • a rotary kiln or a tunnel kiln such as a single brick tunnel kiln.
  • a suitable temperature for heating the pellets in step (d) is between 1030 - 1050°C. Most preferably, the pellets are heated to a temperature of 1030°C [, as this has been shown to provide the most reliable and effective results.
  • a second type of pellet may be produced for use in the treatment of waste water for phosphate recovery.
  • a lower temperature of heating of the pellets is required as compared to that discussed above.
  • the pellets are heated in step (d) to a temperature between 790°C and 810°C. More preferably the pellets are heated to a temperature of 800 °C as this has been shown to produce effective results.
  • a third type of pellet can be produced which is effective in deodorising industrial effluent.
  • This type of pellet ideally requires heating at a relatively low temperature.
  • the pellets are heated in step (d) to a temperature of between 790°C and 810°C.
  • the pellets may be heated to a temperature of 800 °C as this has been shown to be most effective.
  • the mixture, prior to any addition of water in step (a), may comprise a set of components, within the following ranges:
  • red mud pellets formed using the process described hereinbefore.
  • the process of the present invention uses a sustainable raw material in the form of red mud to produce products which can be used in the treatment of contaminants generated by industrial processes.
  • the process reduces contamination levels and provides a permanent solution to the problem of waste contamination.
  • Figure 1 is a figurative representation of a process of forming red mud pellets according to the present invention.
  • a method according to the present invention is described with reference to the formation of three types of pellets for use in three distinct waste contamination treatments.
  • the method differs for each type of pellet only in the temperature required to heat the pellets; as such, like reference numbers have been used for the common steps carried out in each process.
  • Red mud 10 is to be used as a constituent of each type of pellet.
  • the red mud 10 is treated in order, at least partly, to neutralise and thus reduce its alkalinity. This is achieved by adding a substance to the red mud 10.
  • chlorides 1 1 are added to the red mud 10 to reduce the alkalinity.
  • the red mud 10 is mixed with gypsum 12.
  • step (b) the neutralised red mud 10 is mixed with brick clay 13 and water 14 in order to form a slurry 15.
  • the quantity of red mud 10 is between 76- 80% and the quantity of brick clay 13 is between 20-24%, prior to the addition of water 14.
  • the addition of water 14 may not be necessary in step (b) if the moisture content of the red mud 10 is sufficiently high.
  • the target pH may differ; for the water industry the target pH is approximately 8.5.
  • the pH of the slurry 15 may need to be adjusted and this can be achieved by mixing powdered citric acid 18 into the slurry 15.
  • the addition of the citric acid 18 could be to the red mud 10 at the same time as the mixing of the red mud 10, brick clay 13 and water 14 in step (b) or, as shown in step (c2) it may be carried out after the slurry 15 has been formed.
  • the slurry 15 should have a moisture content of 6- 9%. If this is not the case then it may be necessary to adjust the moisture content by either heating the slurry 15 or adding more water 14.
  • the slurry 15 is heated in step (d) in order to dry it slightly and thus harden it to make it more suitable for forming into pellets. Any suitable heating means may be employed for this purpose.
  • pellets 19 are formed; this can be carried out manually but preferably an industrial pellet maker is used.
  • the pellets 19 are ideally irregular, but generally square in shape.
  • the size of the pellets 19 should be less than 1 cm 3 in order to achieve the best results in reducing contamination levels.
  • step (f) the next step is to heat the pellets 19, as indicated in step (f) in order to form a hardened product for use in treating waste material.
  • Heating can be carried out using a refractory sagger.
  • the heating may be carried out using a rotary kiln 20.
  • At least three different types of pellet 19 can be formed using the process of the present invention and these may be used respectively to:
  • the formation of these different pellets differs predominately in the temperature to which the pellets 19 are heated in step (f) although other parameters such as the ratio of red mud to clay can vary.
  • the pellets 19 For the recovery of phosphate in water the pellets 19 must be heated to a temperature of approximately 800 °C; the dwell time for phosphate is around 2 hours.
  • the treatment of acid mine drainage will require firing the pellets 19 at a high temperature between 1030-1050°C. This will provide a very hard pellet 19 that is able to withstand being submerged in acid mine water with a pH in the region of 4 for a period of up to 3 year.
  • the temperature required to heat pellets 19 for the purpose of deodorising industrial effluent is in the region of 800 Q C.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Treatment Of Sludge (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

L'invention concerne un procédé de production de granulés de boue rouge comprenant les étapes consistant à : former une suspension épaisse comprenant un mélange constitué de boue rouge, d'argile et éventuellement d'eau ; ajuster la teneur en eau de la suspension afin d'obtenir un niveau souhaité ; former des granulés avec le mélange ajusté ; et chauffer (cuire) les granulés jusqu'à solidification. L'invention concerne également des granulés formés par ce procédé.
PCT/GB2015/054091 2015-12-18 2015-12-18 Granulés de boue rouge WO2017103553A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/GB2015/054091 WO2017103553A1 (fr) 2015-12-18 2015-12-18 Granulés de boue rouge

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Application Number Priority Date Filing Date Title
PCT/GB2015/054091 WO2017103553A1 (fr) 2015-12-18 2015-12-18 Granulés de boue rouge

Publications (1)

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WO2017103553A1 true WO2017103553A1 (fr) 2017-06-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108441636A (zh) * 2018-03-13 2018-08-24 东北大学 一种二段真空还原处理赤泥的方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3035626A1 (de) * 1980-09-20 1982-04-08 Giulini Chemie Gmbh, 6700 Ludwigshafen Frosthemmender zuschlagstoff fuer den strassenbau
DE3037995A1 (de) * 1980-10-08 1982-08-19 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Verfahren zur verfestigung von rueckstaenden aus der gasreinigung vorzugsweise hinter muellverbrennungsanlagen und kraftwerksanlagen
WO2005061408A1 (fr) * 2003-12-24 2005-07-07 Mt Aspiring Geochemistry Consultants Pty Ltd Matiere particulaire poreuse destinee au traitement d'un fluide, composition a base de ciment et leur procede de fabrication
CN101575503A (zh) * 2009-06-11 2009-11-11 邹平金刚新材料有限公司 一种高强度石油压裂支撑剂及其制备方法
CN102336579A (zh) * 2010-07-26 2012-02-01 贵州省建筑材料科学研究设计院 一种利用赤泥生产高性能陶粒的方法
CN102994742A (zh) * 2012-11-27 2013-03-27 淄博旭德环境工程技术有限公司 赤泥生产烧结球团的制备方法
CN103951463A (zh) * 2014-05-13 2014-07-30 贵州大学 富营养化污染湖泊底泥原位控制覆盖材料及其制备方法
CN104891959A (zh) * 2015-05-14 2015-09-09 山东理工大学 一种以赤泥和瓷砖废料为原料并经包埋烧结生产陶粒的方法
US20150360966A1 (en) * 2012-04-12 2015-12-17 Krsys Gmbh Process and apparatus for obtaining material of value from a bauxite residue

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3035626A1 (de) * 1980-09-20 1982-04-08 Giulini Chemie Gmbh, 6700 Ludwigshafen Frosthemmender zuschlagstoff fuer den strassenbau
DE3037995A1 (de) * 1980-10-08 1982-08-19 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Verfahren zur verfestigung von rueckstaenden aus der gasreinigung vorzugsweise hinter muellverbrennungsanlagen und kraftwerksanlagen
WO2005061408A1 (fr) * 2003-12-24 2005-07-07 Mt Aspiring Geochemistry Consultants Pty Ltd Matiere particulaire poreuse destinee au traitement d'un fluide, composition a base de ciment et leur procede de fabrication
CN101575503A (zh) * 2009-06-11 2009-11-11 邹平金刚新材料有限公司 一种高强度石油压裂支撑剂及其制备方法
CN102336579A (zh) * 2010-07-26 2012-02-01 贵州省建筑材料科学研究设计院 一种利用赤泥生产高性能陶粒的方法
US20150360966A1 (en) * 2012-04-12 2015-12-17 Krsys Gmbh Process and apparatus for obtaining material of value from a bauxite residue
CN102994742A (zh) * 2012-11-27 2013-03-27 淄博旭德环境工程技术有限公司 赤泥生产烧结球团的制备方法
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