DE3245140C1 - Construction material for underground mining - Google Patents

Construction material for underground mining

Info

Publication number
DE3245140C1
DE3245140C1 DE3245140A DE3245140A DE3245140C1 DE 3245140 C1 DE3245140 C1 DE 3245140C1 DE 3245140 A DE3245140 A DE 3245140A DE 3245140 A DE3245140 A DE 3245140A DE 3245140 C1 DE3245140 C1 DE 3245140C1
Authority
DE
Germany
Prior art keywords
building material
gypsum
underground mining
cement
flue gas
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.)
Expired
Application number
DE3245140A
Other languages
German (de)
Inventor
Günter 6680 Neunkirchen Culmann
Guido Dipl.-Ing. Dr. 6670 St. Ingbert Klinkner
Rudolf Dipl.-Ing. 6605 Friedrichsthal Müller
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.)
Saarbergwerke AG
Original Assignee
Saarbergwerke AG
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 Saarbergwerke AG filed Critical Saarbergwerke AG
Priority to DE3245140A priority Critical patent/DE3245140C1/en
Priority to FR8308408A priority patent/FR2527107A1/en
Application granted granted Critical
Publication of DE3245140C1 publication Critical patent/DE3245140C1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/062—Purification products of smoke, fume or exhaust-gases
    • C04B18/064—Gypsum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • 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

Description

- 40 bis 50 Gew.-* Naturanhydrit in der Körnung < 20 mm- 40 to 50 wt .- * natural anhydrite in the grain size <20 mm

- 20 bis 30 Gew.-% Rauchgasentschwefelungsgips - 20 to 30% by weight of flue gas desulphurisation gypsum

- 25 bis 35 Gew.-* suifatresisienier Zement- 25 to 35 wt .- * suifatresisienier cement

- < 1,5 Qtw.-% CaCI,- <1.5 Qtw .-% CaCI,

3. Baumaterial nach Anspruch 1, gekennzeichnet durch folgende Zusammensetzung:3. Building material according to claim 1, characterized by the following composition:

- 10 bis 20 Gew.-* Naturanhydrit einer Körnung < 20 mm- 10 to 20 wt .- * natural anhydrite with a grain size <20 mm

- 5 bis 15 Gew.-* Rauchgasentschwefelungsgips- 5 to 15 wt .- * flue gas desulphurisation gypsum

- 55 bis 70 Gew.-* Elektrofilterasche- 55 to 70 wt .- * electrostatic precipitator ash

-8 bis 14 Gew.-* Tonerdeschmelzzement
-< 1.5 Gew.-% CaCb-8 to 14 wt .- * high-alumina cement
- <1.5% by weight CaCb

Die Erfindung bezieht sich auf ein Baumaterial für den untertägigen Bergbau, insbesondere zur Herstellung von Streckenbegleitdämmen und Ausbaupfeilern, welches ais Hauptbestandteile aus auf Kalkbasis betriebenen Rauchgasentschwefelungsanlagen stammenden Gips, Zement und ggf. Flugasche enthält, wobei Gips als Kalzlunisulfatdlhydrat (CaSO4 χ 2HjO) eingesetzt wird, gemäß Patent 32 19 197.The invention relates to a building material for underground mining, in particular for the production of roadside embankments and expansion pillars, which contains gypsum, cement and possibly fly ash originating from lime-based flue gas desulphurisation systems as the main components, with gypsum being used as calcium sulphate hydrate (CaSO 4 χ 2HjO) , according to patent 32 19 197.

Die In dem Hauptpatent beschriebene Baumaterialmischung ist relativ feinkörnig. Dies führt bei der Verarbeitung im Untertagebereich zu unerwünschten, die Arbeitsbedingungen verschlechternden Staubbildungen. Hinzu kommt, daß bei langen Blasstrecken Verstopfungen In den Rohrleitungen auftreten können.The building material mixture described in the main patent is relatively fine-grained. When processing in underground areas, this leads to undesired Dust formation worsening working conditions. In addition, blockages occur in the case of long blow lines Can occur in the pipelines.

Es sind Baumaterialien für den untertägigen Bergbau bekannt, die auch Anhydrit enthalten. In diesen Baumaterialien dient der aus Dlhyclrat gebrannte Anhydrit im wesentlichen als Bindemittel. d. h. es muß einen hohen Feinkornanteil aufweisen, was wiederum zu Staubbildung bei der Handhabung soleher Baumaterialien führt.There are known building materials for underground mining that also contain anhydrite. In these In building materials, the anhydrite burnt from Dlhyclrate is used essentially as a binding agent. d. H. it must have a high proportion of fine grains, which in turn leads to dust formation when handling such building materials leads.

Aufgabe der vorliegenden Erfindung ist es daher, das In dem Hauptpatent beschriebene Baumaterial im Hinblick auf eine günstigere Handhabung der zu verarbeitenden Baumaterialmischung zu verbessern.The object of the present invention is therefore to provide the building material described in the main patent in the With regard to a more favorable handling of the to be processed Improve building material mix.

Diese Aufgabe wird erflndungsgemüß dadurch gelöst, daß der Mischung als weitere Komponente bis zu 50According to the invention, this object is achieved by that the mixture as a further component up to 50

25 Gew.-* Naturanhydrit in einer Körnung von < 20 mm zugegeben ist. 25 wt .- * natural anhydrite in a grain size of <20 mm is added.

Es hat sich gezeigt, daß durch den erfindungsgemäßen Zusatz von Naturanhydrit zu den in dem Hauptpatent vorgeschlagenen Baumaterialmischungen die Staubentwicklung erheblich reduziert wird, da infolge der Grobkörnigkeit des Anhydrits der Feinkornanteil der Mischung insgesamt verringert wird. Als Bindemittel dient in erster Linie der in den erfindungsgemäßen Mischungen enthaltene Zement.It has been shown that the addition of natural anhydrite according to the invention to those in the main patent proposed building material mixtures, the dust is significantly reduced, as a result the coarse grain of the anhydrite, the fine grain fraction of the mixture is reduced overall. As a binder The cement contained in the mixtures according to the invention is primarily used.

Darüber hinaus werden durch die Wirkung des Anhydrits als Fegekorn Verstopfungen von Blasleitungen weitgehend vermieden.In addition, the effect of the anhydrite as a sweeping grain blocks blowpipes largely avoided.

Es hat sich weiterhin gezeigt, daß im Gegensatz zu mit sauren Anregern versetztem Naturannydrit, der für sich betrachtet oberhalb einer Temperatur von ca. 30° C nicht mehr genügend aushärtet, das erfindungsgemäße Baumaterial sich auch bei den in Frage \ommenden hohen Gebirgstemperaturen bis etwa 60° C genügend schnell verfestigt und die erreichte Endfestigkeit auch beibehält.It has also been shown that in contrast to acidic stimulants added natural anhydrite, which for considered no longer cures sufficiently above a temperature of approx. 30 ° C, the inventive Building material is sufficient even at the high mountain temperatures in question, up to around 60 ° C solidifies quickly and also maintains the final strength achieved.

Im folgenden sind zwei besonders vorteilhafte Rezepturen des erfindungsgemäßen Baumaterials dargestellt:The following are two particularly beneficial recipes of the building material according to the invention:

Beispiel 1example 1

45 Gew.-* Naturanhydrit mit einer Körnung < 20 mm 25 Gew.-% Dihydrat aus der Rauchgasentschwefelung mit 2,5 bis 5 Gew.-* CaCI2
30 Gew.-* sulfatresistenter Zement45 wt .- * natural anhydrite with a grain size <20 mm 25 wt .-% dihydrate from flue gas desulphurisation with 2.5 to 5 wt .- * CaCl 2
30 wt .- * sulphate-resistant cement

Ein solches Baumaterial, bei dem relativ großeSuch a building material, which is relatively large

Mengen Rauchgasentschwefelungsgips verarbeitet sind, entwickelt bei einem Wasser-Feststoffwert von 0,193 nach 24 Stunden Standzelt bei 25° C eine Druckfestlg-Quantities of flue gas desulphurisation gypsum are processed, developed at a water solids value of 0.193 after 24 hours of standing tent at 25 ° C a pressure-resistant

keit von 146 daN/cm2 und bei 40° C von 200 daN/cm2.speed of 146 daN / cm 2 and at 40 ° C of 200 daN / cm 2 .

Beispiel 2Example 2

14 Gew.-* Naturanhydrit mit einer Körnung < 20 mm 9 Gew.-* Rauchgasentschwefelungsgips mit 2,5 bis 514 wt .- * natural anhydrite with a grain size <20 mm 9 wt .- * flue gas desulphurisation gypsum with 2.5 to 5

Gew.-* CaCl2 Weight * CaCl 2

65 Gew.-* Elektrofilterasche
12 Gew.-* Tonerdeschmelzzement65 wt .- * electrostatic precipitator ash
12 wt .- * high alumina cement

Dieses Baumaterial, bei dem zusätzlich große Mengen Elektrofilterasche verwendet sind, entwickelt bei einem Wasser-Feststoffwert von 0,174 nach 6 Stunden Standzelt bei 25° C eine Druckfestigkeit von 84 daN/cm2. und nach 24 Stunden von 100 daN/cm2. Auch hler verbessern erhöhte Temperaturen die i-estigkeitswerte.This building material, which also uses large amounts of electrostatic precipitator ash, develops a compressive strength of 84 daN / cm 2 after 6 hours of standing tent at 25 ° C with a water solids value of 0.174. and after 24 hours from 100 daN / cm 2 . Increased temperatures also improve the strength values.

Es liegt auf der Hand, daß je nach den gestellten Anforderungen auch andere Mischungsverhältnisse möglich sind.
Als Zemente eignen sich Im Grunde alle derzeit auf dem Markt befindlichen Zementarten, wobei auch hler entsprechend der Zementqualität der Anteil an der Mischung schwanken kann.It is obvious that other mixing ratios are also possible depending on the requirements.
Basically all types of cement currently on the market are suitable as cements, although the proportion of the mixture may vary depending on the quality of the cement.

Ein ganz wesentlicher Vorteil der erfindungsgemäßen Baumaterialmischungen ist auch darin zu sehen, daß der Rauchgasentschwefelungsgips lediglich getrocknet werden muß. Ein Pelletisieren bzw. Kontaktieren des Gipses, wie es in der DE-OS 31 09 632 offenbart Ist, ist vor dessen Verarbeitung nicht erforderlich. Hierdurch können erhebliche Kosten eingespart werden.A very important advantage of the building material mixtures according to the invention is also to be seen in the fact that the flue gas desulphurisation gypsum only has to be dried. Pelletizing or contacting the Gypsum, as it is disclosed in DE-OS 31 09 632, is not required before processing. This can save considerable costs.

Claims (2)

Patentansprüche:Patent claims: 1. Baumaterial für den untertägigen Bergbau, insbesondere zur Herstellung von Streckenbegleitdämmen und Ausbaupfeilern, welches als Hauptbestandteile aus auf Kalkbasis betriebenen Rauchgasentschwefelungsanlagen stammenden Gips, Zement und ggf. Flugasche enthält, wobei Gips als Kaiziumsulfatdihydrat (CaSO4 χ 2H2C) eingesetzt wird, gemäß Patent 32 19 197, dadurch gekennzeichnet, daß der Mischung als weitere Komponente bis zu 50 Gew.-* Naturanhydrit in einer Körnung von < 20 mm zugegeben ist.1.Building material for underground mining, in particular for the production of roadside embankments and expansion pillars, which contains gypsum, cement and possibly fly ash as the main components of lime-based flue gas desulphurisation systems, whereby gypsum is used as calcium sulphate dihydrate (CaSO 4 χ 2H 2 C) according to Patent 32 19 197, characterized in that up to 50 wt .- * natural anhydrite in a grain size of <20 mm is added to the mixture as a further component. 2. Baumaterial nach Anspruch 1, gekennzeichnet durch folgende Zusammensetzung:2. Building material according to claim 1, characterized by the following composition:
DE3245140A 1982-05-21 1982-12-07 Construction material for underground mining Expired DE3245140C1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE3245140A DE3245140C1 (en) 1982-12-07 1982-12-07 Construction material for underground mining
FR8308408A FR2527107A1 (en) 1982-05-21 1983-05-20 Utilisation of gypsum plaster from gas desulphurisation - by mixing with other cement and mfr. of pit props and barrages

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3245140A DE3245140C1 (en) 1982-12-07 1982-12-07 Construction material for underground mining

Publications (1)

Publication Number Publication Date
DE3245140C1 true DE3245140C1 (en) 1984-07-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE3245140A Expired DE3245140C1 (en) 1982-05-21 1982-12-07 Construction material for underground mining

Country Status (1)

Country Link
DE (1) DE3245140C1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3612931A1 (en) * 1986-04-17 1987-10-22 Hoelter Heinz Mining mortar from waste dirt of coal extraction
DE3827612A1 (en) * 1988-08-13 1990-02-15 Viktor Dr Ing Gobiet Building material for use in underground operation
DE102006040712A1 (en) * 2006-08-30 2008-03-20 Agn Rohstoffverwertung Gmbh Ground consolidation mixture for e.g. road- and building foundations and other civil engineering works, includes fly ash, gypsum, quicklime or plaster and cement
CN104045297A (en) * 2013-03-14 2014-09-17 浙江天达环保股份有限公司 Fly ash type plastering gypsum

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2833382A1 (en) * 1978-07-29 1980-02-07 Saarbergwerke Ag METHOD FOR RECYCLING THE Gypsum generated in flue gas desulphurization plants that are operated on lime-based
DE3104001A1 (en) * 1980-02-08 1981-12-17 Canon K.K., Tokyo Electromagnetically driven shutter
DE3109879A1 (en) * 1981-03-14 1982-09-23 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Process for disposing of waste products inevitably formed downstream of coal-fired power stations and their utilisation with use of waste heat from the power station for production of preferably dam building materials for underground mining

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2833382A1 (en) * 1978-07-29 1980-02-07 Saarbergwerke Ag METHOD FOR RECYCLING THE Gypsum generated in flue gas desulphurization plants that are operated on lime-based
DE3104001A1 (en) * 1980-02-08 1981-12-17 Canon K.K., Tokyo Electromagnetically driven shutter
DE3109879A1 (en) * 1981-03-14 1982-09-23 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Process for disposing of waste products inevitably formed downstream of coal-fired power stations and their utilisation with use of waste heat from the power station for production of preferably dam building materials for underground mining

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3612931A1 (en) * 1986-04-17 1987-10-22 Hoelter Heinz Mining mortar from waste dirt of coal extraction
DE3827612A1 (en) * 1988-08-13 1990-02-15 Viktor Dr Ing Gobiet Building material for use in underground operation
DE102006040712A1 (en) * 2006-08-30 2008-03-20 Agn Rohstoffverwertung Gmbh Ground consolidation mixture for e.g. road- and building foundations and other civil engineering works, includes fly ash, gypsum, quicklime or plaster and cement
CN104045297A (en) * 2013-03-14 2014-09-17 浙江天达环保股份有限公司 Fly ash type plastering gypsum

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