FR2503694A1 - MULTI-COMPONENT MIXTURE GIVING HYDRAULIC SETTING AND USE THEREOF AS SECOND WORK AND BACKFILL MATERIAL IN MINING - Google Patents
MULTI-COMPONENT MIXTURE GIVING HYDRAULIC SETTING AND USE THEREOF AS SECOND WORK AND BACKFILL MATERIAL IN MINING Download PDFInfo
- Publication number
- FR2503694A1 FR2503694A1 FR8206281A FR8206281A FR2503694A1 FR 2503694 A1 FR2503694 A1 FR 2503694A1 FR 8206281 A FR8206281 A FR 8206281A FR 8206281 A FR8206281 A FR 8206281A FR 2503694 A1 FR2503694 A1 FR 2503694A1
- Authority
- FR
- France
- Prior art keywords
- lime
- alpha
- fly ash
- plaster
- coarse
- 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.)
- Granted
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 26
- 239000000463 material Substances 0.000 title claims abstract description 25
- 239000010881 fly ash Substances 0.000 claims abstract description 31
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 21
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 21
- 239000004571 lime Substances 0.000 claims abstract description 21
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 11
- 239000011707 mineral Substances 0.000 claims abstract description 11
- 238000005065 mining Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000011505 plaster Substances 0.000 claims description 22
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 9
- 235000010755 mineral Nutrition 0.000 claims description 8
- 239000003245 coal Substances 0.000 claims description 5
- 235000019738 Limestone Nutrition 0.000 claims description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 3
- 239000000920 calcium hydroxide Substances 0.000 claims description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 3
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 239000006028 limestone Substances 0.000 claims description 3
- 239000011398 Portland cement Substances 0.000 claims description 2
- 229910052602 gypsum Inorganic materials 0.000 abstract 3
- 239000010440 gypsum Substances 0.000 abstract 3
- 239000002802 bituminous coal Substances 0.000 abstract 1
- 239000004035 construction material Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 4
- 239000002956 ash Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 229910052925 anhydrite Inorganic materials 0.000 description 3
- 150000001805 chlorine compounds Chemical class 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000012190 activator Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 241000218645 Cedrus Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- QHDCFDQKXQIXLF-UHFFFAOYSA-N sulfuric acid sulfurous acid Chemical compound OS(O)=O.OS(O)(=O)=O QHDCFDQKXQIXLF-UHFFFAOYSA-N 0.000 description 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-N sulfurothioic S-acid Chemical compound OS(O)(=O)=S DHCDFWKWKRSZHF-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling 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
- C04B11/00—Calcium sulfate cements
- C04B11/26—Calcium sulfate cements strating from chemical gypsum; starting from phosphogypsum or from waste, e.g. purification products of smoke
- C04B11/262—Calcium sulfate cements strating from chemical gypsum; starting from phosphogypsum or from waste, e.g. purification products of smoke waste gypsum other than phosphogypsum
- C04B11/264—Gypsum from the desulfurisation of flue gases
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
- C04B28/146—Calcium sulfate hemi-hydrate with a specific crystal form alpha-hemihydrate
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
Description
L'invention concerne un mélange a plusieurs com posants apte a la prise hydraulique et son utilisation en tant que matériau de second oeuvre et de remblayage dans l'exploitation minière. The invention relates to a mixture with several components suitable for hydraulic setting and its use as a finishing and backfilling material in mining.
Dans les centrales de fore motrice avec épuration des gaz de fumée, on obtient en produits résiduaires des cendres volantes de houille et des boues de sulfite-sulíaLe et avec certains procédés, du plâtre de gaz de fumée en tant que produit de désulfuration. On sait que l'on peut éliminer ces déchets an les utilisant pour combler des espaces creux dans l'exploitation minière - soit en second oeuvre soit en remblayage - et ils sont transportés a l'endroit d'utilisation par transport pneumatique ; le plâtre est a l'état d'alpha-hémihydrate. In engine-driven power plants with flue gas cleaning, coal fly ash and sulphite sulphide sludge are obtained as residual products and, with certain processes, plaster of flue gas as a desulphurization product. It is known that this waste can be eliminated by using it to fill hollow spaces in mining - either as a finishing work or as backfill - and they are transported to the place of use by pneumatic transport; the plaster is in the state of alpha hemihydrate.
Toutefois, un tel matériau de second oeuvre et de remblayage pour ltexploitation minière doit repondre a certaines exigences en matière de résistance mécanique : il doit posséde-r une haute résistance initiale et une résistance finale déterminée par les conditions particulières du terrain et suffisamment supérieure a la résistance initiale. Jusqu'à maintenant, pour répondre a ces exigences de résistance mécanique, on utilisait essentiellement l'alpha-hémihydrate car il assure une augmentation de résistance très rapide avec des valeurs de résistance initiale relativement élevées. Toutefois, lorsque, en quelques heures ou même en quelques fractions d'heure, on a atteint la résistance initiale on ne constate plus -d'augmentation de résistance a l'état humide, au contraire dans cet état, la résistance diminue.En outre cette utilisation de l'alpha-hémihydrate se heurte a d'autres inconvénients : les prix élevés de préparation et la mauvaise aptitude au transport pneumatique. However, such a finishing and backfilling material for mining must meet certain requirements in terms of mechanical resistance: it must have a high initial resistance and a final resistance determined by the particular conditions of the ground and sufficiently greater than the initial resistance. Until now, to meet these mechanical strength requirements, we mainly used alpha-hemihydrate because it provides a very rapid increase in strength with relatively high initial strength values. However, when, within a few hours or even a few fractions of an hour, the initial resistance has been reached, there is no longer any increase in resistance in the wet state, on the contrary in this state, the resistance decreases. this use of alpha-hemihydrate comes up against other drawbacks: the high preparation costs and the poor aptitude for pneumatic transport.
Un autre inconvénient de ces matériaux de second oeuvre et de remblayage connus réside en ce que l'alpha-hémihydrate doit etre exempt de chlorure car les impuretés du type chlorure conduisent A des diminutions de résistance. Cela signifie que llalpha-hémihydrare obtenu å l'épuration des gaz de fumée doit lui-mAme outre purifié et que les eaux résiduaires obtenues, contenant des chlorures, doivent etre traitées. Another drawback of these known finishing and backfilling materials lies in that the alpha-hemihydrate must be free of chloride because the impurities of the chloride type lead to decreases in strength. This means that the alpha-hemihydrare obtained by the purification of smoke gases must itself be further purified and that the waste water obtained, containing chlorides, must be treated.
Finalement, ces matériaux de second oeuvre et de remblayage connus ont un inconvénient essentiel : ils ne permettent pas de se débarrasser de tous les déchets provenant d'une centrale. En effets au fonctionnement d'une centrale, les proportions relatives formées de cedres volantes et de plâtre de-gaz de :L':ree sont entre lies de 2 : 1 e 5 : i, c'est-à-dire qu'il y a beaucoup plus de cendres volantes que de plâtr 'e gaz de fumé, alors que dans les matériaux de second oeuvre et de remblayage les proportions relatives cendres volantes/plâtre de gaz de fumée sont au maximum de 1 : 1 @ dans la plupart des cas même il faut plus J'aipha-hérir.ydrate que de cendres volantes, de sorte que ces dernières ne peuvent être éliminées qu'en partie. Finally, these known finishing and backfilling materials have an essential drawback: they do not make it possible to get rid of all the waste coming from a power plant. In effect during the operation of a power plant, the relative proportions formed of flying cedars and gas plaster of: L ': ree are between lies of 2: 1 e 5: i, that is to say that it there are many more fly ash than plaster of smoke gas, while in the finishing and backfilling materials the relative proportions of fly ash / plaster of smoke gas are at most 1: 1 @ in most In the same case, more aipha-hHER.hydrate is needed than fly ash, so that the latter can only be partially removed.
Dans un procédé décrit dans le brevet de la
République Fédérale d'Allemagne n 2 603 699 pour éliminer le résidu du lavage des gaz résiduaires de chaudière, on transforme d'abord les boues de sulfite-sulfate en plâtre sous la forme d'alpha-hémi- hydrate et on transporte ensuite cet alpha-hémihydrate sec sous terre, où il est utilisé pour le renforcement des galeries. Dans ce procédé connu, on rencontre tous les inconvénients mentionnés cidessus : les frais de préparation élevés de l'alpha-hémihydrate, la mauvaise aptitude au transport de ce matériau et la résistance mécanique qui diminue dans le temps a l'état humide ; mais surtout, on n'assure pas ainsi l'élimination du déchet que constituent les cendres volantes.In a process described in the patent of the
Federal Republic of Germany n 2 603 699 to remove the residue from the washing of boiler waste gases, the sulphite-sulphate sludge is first transformed into plaster in the form of alpha-hemihydrate and then this alpha is transported - dry hemihydrate underground, where it is used for the reinforcement of the galleries. In this known process, all the drawbacks mentioned above are encountered: the high preparation costs of the alpha hemihydrate, the poor ability to transport this material and the mechanical strength which decreases over time in the wet state; but above all, this does not ensure the elimination of the waste that constitutes fly ash.
Selon une publication de la Steinkohlenbergbauverein (Kurznachrichten aus Bergtechnik und Kohlenveredelung n 10@, février 1979), on prévoit l'utilisation de l'alpha-he'mihydrate seuil ou avec une adjonction d'anhydrite naturelle, de cendres d'électro- filtre (cendres volantes) ou de remblais obtenus sur place ou avec une adjonction de cendres d'électrofîltre et de remblais obtenus sur place en tant que matière de charge de remblayage de bordure et de matière de charge de terre-plein. Dans ce matériau de second oeuvre er de remblayage connu, les cendres d'électrofiltre ne participent pas au processus de prise.Loi-squ'on a atteint la résistance initiale au bout de quelques heures, il n'y a plus d'augmentation de résistance, comme on peut le constater en examinant les courbes 3 et 5 du graphique annexé a la publication précitée. Par suite, il n'est pas possible d'augmenter d'une maniere notable la proportion de cendres d'électrofiltre au-dela des proportions indiquées de 1 : 1 en volume sans une forte diminution de la résistance mécanique, de sorte que ce matériau ne permet pas non plus d'absorber la proportion beaucoup plus forte de cendres volantes obtenue au fonctionnement d'une centrale. According to a publication by the Steinkohlenbergbauverein (Kurznachrichten aus Bergtechnik und Kohlenveredelung n 10 @, February 1979), provision is made for the use of threshold alpha-hemihydrate or with the addition of natural anhydrite, electrofilter ash (fly ash) or embankments obtained on site or with the addition of electrofilter ash and embankments obtained on site as border fill and fill material. In this known finishing and backfilling material, the electrofilter ash does not participate in the setting process. When we reach the initial resistance after a few hours, there is no increase in resistance, as can be seen by examining curves 3 and 5 of the graph appended to the above publication. Consequently, it is not possible to appreciably increase the proportion of electrofilter ash beyond the indicated proportions of 1: 1 by volume without a large reduction in mechanical strength, so that this material also does not absorb the much higher proportion of fly ash obtained in the operation of a power plant.
La même observation s'applique dans le cas d'une proposition antérieure qui concerne un procédé pour le remblayage pneumatique de l'alpha-hémthydrate et/ou du btta-hémihydrate prove-' nant en particulier des residus de centrales alimentées en charbon et pour l'utilisation sous terre, dans le quel on utilise un mélange d'alpha-hémihydrate, de cendres volantes et d'anhydrite naturelle a gros grains et! ou de calcaire.Dans cette proposition antérieure, on donne comme exemple de mélange utilisable un mélange de 60 % d'alpha-hémihydrate, 30 % de cendres volantes et 10 % d'anhydrite naturelle, ce qui montre clairement que la proportion de cendres volantes doit etre maintenue beaucoup plus faible que la proportion d 'alpha-bémihydrate. The same observation applies in the case of an earlier proposal which relates to a process for the pneumatic backfilling of alpha-hemthydrate and / or beta-hemihydrate originating in particular from the residues of coal-fired power plants and for underground use, in which we use a mixture of alpha hemihydrate, fly ash and natural anhydrite with large grains and! or limestone. In this previous proposal, an example of a usable mixture is given as a mixture of 60% alpha hemihydrate, 30% fly ash and 10% natural anhydrite, which clearly shows that the proportion of fly ash should be kept much lower than the proportion of alpha hemihydrate.
L'invention vise å remédier à ces inconvénients, c'est-a-dire b mieux adapter qu'auparavant les quantités de cendres volantes et de plâtre, produits résiduaires de l'épuration des gaz de fumée, prélevées pour la préparation d'un matériau de second oeuvre et de remblayage pour l'exploitation minire, aux quantités réelles formées de ces matériaux, sans amoindrissement des propriétés de résistance mécanique du matériau final et marne, au contraire, en assurant une augmentation permanente de le résistance mécanique, ainsi qu'a permettre l'utilisation de 1'alpha-hémihydrate brut, contenant des chlorures en impuretés, ainsi que les eaux obtenues conte eau de gachage. The invention aims to remedy these drawbacks, that is to say better adapt than before the quantities of fly ash and plaster, residual products of the purification of smoke gases, taken for the preparation of a finishing and backfilling material for mining, to the actual quantities formed of these materials, without reducing the mechanical strength properties of the final material and marl, on the contrary, ensuring a permanent increase in mechanical strength, as well as to allow the use of crude alpha-hemihydrate, containing chlorides in impurities, as well as the waters obtained by mixing water.
D'autres buts et avantages de l'invention apparattront a la lecture de la description ci-apres. Other objects and advantages of the invention will appear on reading the description below.
Ces buts et avantages ont été atteints otaformémeat å l'invention en utilisant un melange plusieurs composants, apte a la prise hydraulique, comme matériau de second oeuvre et de remblayage dans l'exploitation minière, ce mélange consistant en plate alpha, cendres volante8 de houille, un granulat minéral en gros grains et un composant fournissant de la chaux, auquel on ajoute dc manière connue en soi la quantité d'eau nécessaire pour la prise. These aims and advantages have been achieved otaformémeat å the invention by using a mixture of several components, suitable for hydraulic intake, as a finishing material and backfill in mining, this mixture consisting of alpha plate, fly ash 8 of coal , a coarse-grained mineral aggregate and a component providing lime, to which is added in a manner known per se the amount of water necessary for setting.
Comparativement aux matériaux de second oeuvre et de remblayage connus, l'utilisation d'un tel matériau apporte les
avantages suivants : le composant apportant la chaux, faisant fonc
tion d'activateur, transforme les cendres volantes en un composant
apte a la prise hydraulique, qui assure une augmentation persistante de résistance mécanique (cf le graphique de la figure unique du dessin annexé). Pour parvenir å la résistance finale voulue, on n'est donc plus limité a l'alpha-hémihydrate seul, et on peut abaisser la proportion de ce composant en faveur de la proportion de cendres volantes jusqu'au niveau nécessaire pour atteindre une résistance initiale suffisante.En outre, on a constaté avec une surprise totale que, en raison de la prise hydraulique des cendres volantes de houille, le chlorure contenu dans l'alpha-hémihydrate brut n'avait plus ses effets amoindrissants sur la résistance mécanique.Compared to known finishing and backfilling materials, the use of such a material provides the
following advantages: the component providing the lime, making
activator, transforms fly ash into a component
suitable for hydraulic intake, which ensures a persistent increase in mechanical strength (see the graph in the single figure of the attached drawing). To achieve the desired final resistance, we are no longer limited to alpha-hemihydrate alone, and we can lower the proportion of this component in favor of the proportion of fly ash to the level necessary to reach an initial resistance Furthermore, it was found with total surprise that, due to the hydraulic intake of the fly ash from coal, the chloride contained in the crude alpha-hemihydrate no longer had its diminishing effects on mechanical strength.
Certes, on a dejà décrit dans la demande de brevet de la République Fédérale d'Allemagne publiée sous n0 DOS 2 803 764 et le brevet japonais n 79/141 818 des matériaux de composition analogue (hémihydrate + cendres volantes + chaux/ciwent + anhydrite ou philtre + cendres volantes + ciment + sable) mais ces matériaux étaient prévus pour une utilisation tout a fait différente b savoir la fabrication d'éléments de construction conçue pour la construction de biti- sentis, par exemple des parpaings, des panneaux de construction ou des articles analogues.Lors de l'utilisation de ce matériau dans des buts de second oeuvre et de remblayage en exploitation minière, on a maintenant constaté avec surprise que ce mélange a plusieurs composants convenait exceptionnellement pour ce domaine d'application particulier car, dans ce cas comme dans aucun autre cas d'utilisatian connu ant6- rieurement, les conditions n'existent pas d'elles-mêmes pour une utilisation optimale d'un tel matériau. Admittedly, we have already described in the patent application of the Federal Republic of Germany published under No. DOS 2 803 764 and Japanese patent No. 79/141 818 materials of similar composition (hemihydrate + fly ash + lime / ciwent + anhydrite or potion + fly ash + cement + sand) but these materials were intended for a completely different use, namely the manufacture of building elements designed for the construction of bititisis, for example blocks, building panels or Similar articles. When using this material for finishing and backfilling purposes in mining, it has now been surprisingly found that this mixture with several components is exceptionally suitable for this particular field of application because, in this case as in no other previously known use case, the conditions do not exist by themselves for an optimal use of such a material.
Selon une caractéristique avantageuse de l'inven
tion, on utilise comme composant apportant la chaux de la chaux cal cinée broyée, de la chaux hydratée ou des ciments, en particulier du
ciment Portland. En plus de ces composants apportant la chaux, on
peut utiliser en tant qu'activateurs des composés alcalins a rédaction
basique, parmi lesquels par exemple des lessives résiduaires.According to an advantageous characteristic of the invention
tion, is used as a component bringing the lime crushed cal lime, hydrated lime or cements, in particular
Portland cement. In addition to these components providing lime,
can use as activators drafting alkaline compounds
basic, including for example residual detergents.
I1 est préférable que le granulat minéral en
grains grossiers consiste en anhydrite naturelle, en calcaire, en
remblai ou en platre alpha compacté. Ce composant assure en premier
lieu la bonne aptitude du matériau au transport pneumatique ; en outre, il contribue à ce que le matériau de second oeuvre et de rembiayage, avant d'etre pris, possède un frottement interne suffisant pour exiler par exemple les tendances au glissement lors d'une pulvérisation sur des talus.It is preferable that the mineral aggregate in
coarse grains consists of natural anhydrite, limestone,
backfill or compacted alpha plaster. This component ensures first
place the good suitability of the material for pneumatic transport; in addition, it contributes to the fact that the finishing and backfilling material, before being taken, has sufficient internal friction to exile, for example, the tendency to slip during spraying on embankments.
Conformément à l'invention) on peut ajouter au melange à plusieurs composants un plâtre alpha prépare a partir de plâtre de gaz de fumée, a l'état impur, c'est-à-dire un pitre alpha brut. Les impuretés, principalement des chlorures, n'ont aucun inconvénient aux proportions habituelles qui vont jusqu'à 1,5 7 en poids. According to the invention) can be added to the mixture with several components an alpha plaster prepared from plaster of smoke gas, in the impure state, that is to say a crude alpha pitre. The impurities, mainly chlorides, have no disadvantage with the usual proportions which go up to 1.5% by weight.
En outre, on peut utiliser des eaux obtenues lors de la désulfuration des gaz de fumée ou lors de la préparation du platre alpha comme eau de gâchage jusqu'a une teneur totale en chlorure du mortier représentant 2,5 % en poids de C1.In addition, it is possible to use water obtained during the desulphurization of the flue gases or during the preparation of the alpha plaster as mixing water up to a total chloride content of the mortar representing 2.5% by weight of C1.
On a obtenu des résultats particulièrement avantageux avec un mélange dans lequel les proportions de plâtre alpha et de cendres volantes représentent chacune de 25 a 55 Z en poids le granulat minéral en grains grossiers de 10 a 40 % en poids et le composant apportant la chaux de 1 & 6 % en poids, la proportion du même composant, rapportée aux cendres volantes, représentant de 3 å 12 7 en poids, le plâtre alpha non compacté étant de préférence à une dimension de grain inférieure a 1,0 mm, les cendres volantes dans l'état où elles sont obtenues, le granulat minéral en grains grossiers à une dimension de grain allant jusqu'à 25 mm et le composant apportant la chaux à une dimension de grain inférieure à 0,5mm. Particularly advantageous results have been obtained with a mixture in which the proportions of alpha plaster and fly ash each represent from 25 to 55% by weight of the coarse-grained mineral aggregate of 10 to 40% by weight and the component providing the lime of 1 & 6% by weight, the proportion of the same component, related to fly ash, representing from 3 to 12 7 by weight, the non-compacted alpha plaster preferably being at a grain size less than 1.0 mm, the fly ash in the state in which they are obtained, the mineral aggregate in coarse grains with a grain size of up to 25 mm and the component providing the lime with a grain size of less than 0.5 mm.
Le graphique de la figure unique du dessin annexé illustre l'influence du composant apportant la chaux sur le comportement de résistance mécanique d'un mélange de plâtre alpha, de cendres volantes de houille et d'anhydrite naturelle. The graph in the single figure of the accompanying drawing illustrates the influence of the component providing lime on the behavior of mechanical resistance of a mixture of alpha plaster, coal fly ash and natural anhydrite.
Sur ce graphique, on a compard le développe;ient de la résistance mécanique dans le temps pour un mélange à plusieurs composants selon l'invention avec composant apportant de la chaux t1) et pour un mélange analogue mais sans composant apportant de li chaux (2) ; le rapport eau/substances solides est de 0,19. This graph shows the development; the mechanical resistance over time for a mixture with several components according to the invention with component providing lime t1) and for a similar mixture but without component providing lime (2 ); the water / solids ratio is 0.19.
La courbe 1 représente la variation de résistance pour le mélange -selon l'invention qui contient lui-meme 30 7 de plâtre alpha, 35 % de cendres volantes, 32 % de gres d'anhydrite et 3 % de chaux hydratée ; la courbe 2 a té obtenue avec un mélange de 31 % de plâtre alpha, 36 7 de cendres volantes et 33 % de grès d'anhydrite. On a porté en abscisses la durée de stockage en jours et en ordonnées la résistance à la compression a l'état humide, en MN/m2. Curve 1 represents the variation in resistance for the mixture - according to the invention which itself contains 30% of alpha plaster, 35% of fly ash, 32% of anhydrite gres and 3% of hydrated lime; curve 2 was obtained with a mixture of 31% alpha plaster, 36% fly ash and 33% anhydrite sandstone. The storage duration in days was plotted on the abscissa and the compressive strength in the wet state, in MN / m2, was plotted on the ordinate.
Claims (8)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3114555A DE3114555C2 (en) | 1981-04-10 | 1981-04-10 | Use of a hydraulically setting multi-component mixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2503694A1 true FR2503694A1 (en) | 1982-10-15 |
| FR2503694B1 FR2503694B1 (en) | 1986-08-29 |
Family
ID=6129881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8206281A Expired FR2503694B1 (en) | 1981-04-10 | 1982-04-09 | MULTI-COMPONENT MIXTURE GIVING HYDRAULIC SETTING AND USE THEREOF AS SECOND WORK AND BACKFILL MATERIAL IN MINING |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE892423A (en) |
| DE (1) | DE3114555C2 (en) |
| FR (1) | FR2503694B1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0173351A2 (en) * | 1984-08-30 | 1986-03-05 | Bison-Werke Bähre & Greten GmbH & Co. KG | Process for making shaped gypsum articles, especially boards |
| FR2613346A1 (en) * | 1987-04-04 | 1988-10-07 | Rwk Rhein Westfael Kalkwerke | PROCESS FOR PRODUCING CALCIUM SULFATE SEMI-HYDRATE, CALCIUM SULFATE SEMI-HYDRATE PRODUCED BY CARRYING OUT SAID PROCESS AND MIXTURE OF MORTAR CONTAINING SUCH SEMI-HYDRATE |
| WO2003045873A1 (en) * | 2001-11-26 | 2003-06-05 | Setliff Brothers Ii, Ltd. | Quick set flowable fill composition and method |
| US9017495B2 (en) | 2000-01-05 | 2015-04-28 | Saint-Gobain Adfors Canada, Ltd. | Methods of making smooth reinforced cementitious boards |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3226702A1 (en) * | 1982-03-13 | 1984-02-09 | Heinz Dipl.-Ing. 4390 Gladbeck Hölter | Process for the utilisation of coalmining dirt with feed of waste products from flue gas purification |
| DE3612931A1 (en) * | 1986-04-17 | 1987-10-22 | Hoelter Heinz | Mining mortar from waste dirt of coal extraction |
| DE3614856A1 (en) * | 1986-05-02 | 1987-11-05 | Frank W Dr Ing Fink | Method of mechanising the backfilling work in roadway support operations by using the same building material for sealing and cavity filling using pumping and by means of controlling the setting behaviour |
| DE3631385A1 (en) * | 1986-09-15 | 1988-03-24 | Knauf Westdeutsche Gips | Method of supporting underground roadways with the use of mining mortar on a gypsum basis, and mining mortar intended for carrying out this method |
| DE3827612A1 (en) * | 1988-08-13 | 1990-02-15 | Viktor Dr Ing Gobiet | Building material for use in underground operation |
| US5223035A (en) * | 1990-08-29 | 1993-06-29 | Lafarage Canada Inc. | Pozzolan blends |
| CN101935198B (en) * | 2010-09-12 | 2012-08-29 | 上海城建市政工程（集团）有限公司 | Environment-friendly shield construction single-liquid synchronous grouting slurry |
| CN109053119B (en) * | 2018-11-08 | 2020-01-17 | 湖南天越环保科技有限公司 | Inorganic ecological coating with multielement decorative effect and preparation method and application thereof |
| CN114940591A (en) * | 2022-05-10 | 2022-08-26 | 天津拓展伟创材料研究有限公司 | Cementing material for curing high-water-content tailings |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2803764A1 (en) * | 1978-01-28 | 1979-08-16 | Saarbergwerke Ag | Utilising fly ash and calcium sulphate obtd. from flue gas - of coal burning furnace desulphurisation units, by heating aq. suspension to form anhydrite, and casting into bricks, etc. |
| EP0021180A1 (en) * | 1979-06-09 | 1981-01-07 | Ruhrkohle Aktiengesellschaft | Process for the elimination and economical usage of the residue produced by washing furnace exhaust gas in connection with waste products |
| EP0022318A1 (en) * | 1979-06-20 | 1981-01-14 | L. John Minnick | Method for the production of cementitious compositions and aggregate derivatives from said compositions, and cementitious compositions and aggregates produced thereby |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2002570A1 (en) * | 1969-02-20 | 1970-09-10 | Zementkombinat Dessau Inst Fue | Process for the manufacture of products from CaSO4 binders and industrial waste materials |
| DE2216039C3 (en) * | 1972-04-01 | 1981-09-17 | Gebr. Knauf Westdeutsche Gipswerke, 8715 Iphofen | Hydraulically setting material for expansion purposes in mining |
| DE2603699C2 (en) * | 1976-01-31 | 1977-12-08 | Ruhrkohle AG; Steag AG; 4300 Essen | Process for removing the residue of the waste gas scrubbing from furnaces, in particular from hard coal-fired power plants |
| DE2724599C3 (en) * | 1977-06-01 | 1980-07-03 | Karl August Dr.-Ing. 6145 Lindenfels Ullrich | Hydraulically hardenable and inflatable compound for filling cavities connected to pit structures |
| DE2811910A1 (en) * | 1978-03-18 | 1979-09-27 | Steag Handel Gmbh | Dry sprayable cementitious mix - comprising cement fly ash and crushed slag, for stopping mining cavities |
| DE2906230A1 (en) * | 1979-02-17 | 1980-08-28 | Steag Ag | Disposal of residue obtd. from waste gas washing plants - where residue is calcined to form beta calcium sulphate hemi:hydrate employed to reinforce tunnels in underground mines |
-
1981
- 1981-04-10 DE DE3114555A patent/DE3114555C2/en not_active Expired
-
1982
- 1982-03-09 BE BE0/207514A patent/BE892423A/en not_active IP Right Cessation
- 1982-04-09 FR FR8206281A patent/FR2503694B1/en not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2803764A1 (en) * | 1978-01-28 | 1979-08-16 | Saarbergwerke Ag | Utilising fly ash and calcium sulphate obtd. from flue gas - of coal burning furnace desulphurisation units, by heating aq. suspension to form anhydrite, and casting into bricks, etc. |
| EP0021180A1 (en) * | 1979-06-09 | 1981-01-07 | Ruhrkohle Aktiengesellschaft | Process for the elimination and economical usage of the residue produced by washing furnace exhaust gas in connection with waste products |
| EP0022318A1 (en) * | 1979-06-20 | 1981-01-14 | L. John Minnick | Method for the production of cementitious compositions and aggregate derivatives from said compositions, and cementitious compositions and aggregates produced thereby |
Non-Patent Citations (1)
| Title |
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| CHEMICAL ABSTRACTS, vol. 57, no. 5, 1962, colonne 5592g, Columbus Ohio (US) * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0173351A2 (en) * | 1984-08-30 | 1986-03-05 | Bison-Werke Bähre & Greten GmbH & Co. KG | Process for making shaped gypsum articles, especially boards |
| EP0173351A3 (en) * | 1984-08-30 | 1987-05-27 | Bison-Werke Bähre & Greten GmbH & Co. KG | Process for making shaped gypsum articles, especially boards |
| FR2613346A1 (en) * | 1987-04-04 | 1988-10-07 | Rwk Rhein Westfael Kalkwerke | PROCESS FOR PRODUCING CALCIUM SULFATE SEMI-HYDRATE, CALCIUM SULFATE SEMI-HYDRATE PRODUCED BY CARRYING OUT SAID PROCESS AND MIXTURE OF MORTAR CONTAINING SUCH SEMI-HYDRATE |
| BE1002661A3 (en) * | 1987-04-04 | 1991-04-30 | Rwk Rhein Westfael Kalkwerke | PROCESS FOR THE MANUFACTURE OF CALCIUM SULFATE SEMI-HYDRATE. |
| US9017495B2 (en) | 2000-01-05 | 2015-04-28 | Saint-Gobain Adfors Canada, Ltd. | Methods of making smooth reinforced cementitious boards |
| WO2003045873A1 (en) * | 2001-11-26 | 2003-06-05 | Setliff Brothers Ii, Ltd. | Quick set flowable fill composition and method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3114555A1 (en) | 1982-10-28 |
| FR2503694B1 (en) | 1986-08-29 |
| BE892423A (en) | 1982-07-01 |
| DE3114555C2 (en) | 1984-12-13 |
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