US3397845A - Grinding mill plant - Google Patents

Grinding mill plant Download PDF

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Publication number
US3397845A
US3397845A US446003A US44600365A US3397845A US 3397845 A US3397845 A US 3397845A US 446003 A US446003 A US 446003A US 44600365 A US44600365 A US 44600365A US 3397845 A US3397845 A US 3397845A
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US
United States
Prior art keywords
mill
separator
grinding mill
plant
conduit
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 - Lifetime
Application number
US446003A
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English (en)
Inventor
Muller Franz
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz 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 Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
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Publication of US3397845A publication Critical patent/US3397845A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00—Disintegrating plant with or without drying of the material

Definitions

  • My invention relates to a grinding mill plant of the type having a comminuting machine for primary breaking or crushing and a fine grinding mill for secondary crushing as well as a common separator.
  • the raw material is supplied to the separator by gases from the primary comminuting machine and the secondary fine grinding mill and the coarser components of the material are fed back from the separator into the fine grinding mill.
  • the material to be processed is comminuted in an impacter or beater mill, which simultaneously serves as an air blower, and is sub sequently fed to a separator in which separation of the coarse and the fine material takes place.
  • the coarse material is then delivered to a fine grinding mill and after suitable comminution is again fed back to the beater mill through a horizontally disposed conduit by a gas flow guided in the flow circuit or loop in the plant.
  • the deposition of ground material in the horizontal conduit which can lead to complete obstruction of the conduit, cannot be avoided. Consequent interruption of the operation may result therefrom, and the prevention of such an occurrence requires exceptional expenditure in labor, duration and costs.
  • a grinder mill plant which comprises a comminuting machine and a fine grinder mill that are directly connected with a separator.
  • each of both the comminuting machine and the fine grinder mill need be subjected respectively to that quantity of gas only that is necessary for drying and for transporting the material solely therein.
  • a final separator of the suitably ground material and the conveying gases is provided, and since the gases passing into the loop after leaving the final separator are free of material to be ground and therefore there is no longer any danger of increased wear and tear due to the material to be ground, a special mill blower is connected to the final separator in the loop so that the energy expenditure for drawing the gases through the loop is greatly reduced.
  • both the comminuting machine and the fine grinder mill are connected to an ascending conduit or stack which affords no danger of deposition of the fine ground material.
  • a grinding mill plant or installation which includes a storage and supply hopper 1 for the material which is to be comminuted and dried.
  • Beneath the outlet opening of the hopper there is provided an apron feeder 2, for example, of conventional construction which ensures uniform supply or feeding of the material.
  • a slide or chute 3 extends from the feeder 2 to a rustproof hammer mill 4.
  • a hot gas supply conduit 5 is connected at one end to the top of the hammer mill 4 and at the other end to one end of a gas channel 6, located underground in the embodiment shown in the figure.
  • the gas channel 6 in turn is connected at its other end by hot gas conduits 7 and 7 to a hot gas producer 8, such as an oilfired furnace of conventional construction or a furnace fired by powdered coal or natural gas.
  • this separator 11 the coarse material is separated from the gas flow and is discharged.
  • the hot gas conduit 7, as shown in the figure, is connected to the hot :gas producer 8 at one end and to the inlet end of the tube mill 14 at the other end thereof.
  • a gas outlet conduit 16 from the separator 11 leads to a final cyclone separator 17 in which the solid materials are separated from the gases.
  • a suction blower 19 having a conduit 20 on the pressure side thereof which connects to the conduit 7 extending between the hot gas producer 8' and the tube mill 14.
  • a portion of the gases advanced or propelled by the blower 19 is conducted through a branch conduit 21 through a dust removing alpparatus not shown in the drawing, into the surrounding atmosphere.
  • the grinding mill plant shown in the drawing operates in the following manner:
  • the raw material for example cement raw material with a water content of 16% and a grain size up to about 30 mm.
  • the material is comminuted to a grain size below about 10 mm. and is dried to a Water content of 10% in the mill 4.
  • the comminuted material is transported into the separator 11 by the hot gases produced in the furnace 8 and supplied to the hammer mill 4 through the conduit 5, and the coarse material, e.g. those component particles having a grain size above about 0.1 mm., is separated and conducted into the tube mill 14 by the conveyor 12. In the mill 14, the material is then ground to its ultimate fine form and completely dried.
  • the material discharging from the tube mill 14 is also conveyed by a gas flow back to the separator 11. Coarse materials possibly entrained by the gas flow are then separated in the separator 11 and consequently the fine material from both mills 4 and 14 is delivered by the gas flow through the conduit 16 into the cyclone separator 17, wherein the gases and the solid particles are separated from one another. A portion of the gases is finally conducted from the cyclone separator 17, under the action of the suction blower 19 connected in the loop or flow circuit, through the conduit 21 into the surrounding atmosphere while the remainder of the gases is returned through the conduits 20 and 7' into the tube mill -14.
  • said hot gas supply means comprises a hot gas source directly connected in common to respective hot gas inlets of said comminuting machine and said fine grinding mill.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Disintegrating Or Milling (AREA)
  • Drying Of Solid Materials (AREA)
  • Combined Means For Separation Of Solids (AREA)
US446003A 1964-04-08 1965-04-06 Grinding mill plant Expired - Lifetime US3397845A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK52613A DE1281817B (de) 1964-04-08 1964-04-08 Mahltrocknungsanlage

Publications (1)

Publication Number Publication Date
US3397845A true US3397845A (en) 1968-08-20

Family

ID=7226419

Family Applications (1)

Application Number Title Priority Date Filing Date
US446003A Expired - Lifetime US3397845A (en) 1964-04-08 1965-04-06 Grinding mill plant

Country Status (5)

Country Link
US (1) US3397845A (da)
CH (1) CH426442A (da)
DE (1) DE1281817B (da)
DK (1) DK119389B (da)
GB (1) GB1091963A (da)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3565349A (en) * 1968-05-10 1971-02-23 Creusot Forges Ateliers Installation for pulverizing and drying crude quarry products
US3754713A (en) * 1970-03-28 1973-08-28 Bayer Ag Separation of magnetizable particles
US3854666A (en) * 1973-01-29 1974-12-17 Gilbert Associates Process for pulverizing coal to ultrafine size
US4113187A (en) * 1976-05-08 1978-09-12 Klockner-Humboldt-Deutz Aktiengesellschaft Method and apparatus for drying and grinding
US20060243830A1 (en) * 2005-04-27 2006-11-02 Josephs Leroy R Auto shredder air scrubber
CN115254374A (zh) * 2022-06-30 2022-11-01 徐州桐圣建材有限公司 一种能增加水泥原料的研磨效率的水泥加工用立磨装置
US20230080044A1 (en) * 2019-10-15 2023-03-16 Societe Financiere Industrielle Method and facility for continuous aeraulic separation of particulate materials consisting of a mixture of particules heterogeneous in both particle size and density

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1323295A (en) * 1970-01-06 1973-07-11 Smidth & Co As F L Dry grinding of raw materials
DE2055126A1 (de) * 1970-11-10 1972-07-06 Klöckner-Humboldt-Deutz AG, 5000 Köln Mahltrocknungsanlage
DE2126895C2 (de) * 1971-05-29 1985-05-15 Klöckner-Humboldt-Deutz AG, 5000 Köln Mahltrocknungsanlage
DE3230824C2 (de) * 1982-08-19 1985-03-14 O & K Orenstein & Koppel Ag, 1000 Berlin Mahltrocknungsanlage mit Vorzerkleinerung
EP0220681B1 (de) * 1985-10-29 1991-05-29 Klöckner-Humboldt-Deutz Aktiengesellschaft Einrichtung zur Zerkleinerung und Mahlung von feuchtem spröden Mahlgutes
CN106925409A (zh) * 2017-05-05 2017-07-07 山东致才颜料科技股份有限公司 一种铝粉生产装置
CN112742845B (zh) * 2020-12-17 2022-04-19 安徽省新路建设工程集团有限责任公司 一种工业固体废弃物环保处理方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1729424A (en) * 1924-02-09 1929-09-24 Harshaw Chem Corp Method of and mechanism for drying materials
US1737800A (en) * 1928-05-09 1929-12-03 Peabody Engineering Corp Apparatus for pulverizing material
US1921166A (en) * 1930-10-24 1933-08-08 Peabody Engineering Corp Pulverizer
US2144418A (en) * 1935-04-17 1939-01-17 Anthony J Marciante Method and apparatus for sorting or classifying solids
US2351870A (en) * 1940-12-26 1944-06-20 Allis Chalmers Mfg Co Combined ball mill and drier
US2362528A (en) * 1942-06-03 1944-11-14 Libbey Owens Ford Glass Co Preparation of fine cellulose flour
DE1138994B (de) * 1958-08-22 1962-10-31 Hazemag Hartzerkleinerung Mahlanlage
US3241774A (en) * 1963-08-06 1966-03-22 Jackering Gunter Method of comminuting thermoplastic materials

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1439835U (da) * 1900-01-01
DE935341C (de) * 1938-09-01 1955-11-17 Buettner Werke Ag Mahlanlage
DE968987C (de) * 1952-08-20 1958-04-17 Kohlenscheidungs Ges Mit Besch Mahlanlage
GB764127A (en) * 1955-01-13 1956-12-19 Riley Stoker Corp Apparatus for the comminution of coal

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1729424A (en) * 1924-02-09 1929-09-24 Harshaw Chem Corp Method of and mechanism for drying materials
US1737800A (en) * 1928-05-09 1929-12-03 Peabody Engineering Corp Apparatus for pulverizing material
US1921166A (en) * 1930-10-24 1933-08-08 Peabody Engineering Corp Pulverizer
US2144418A (en) * 1935-04-17 1939-01-17 Anthony J Marciante Method and apparatus for sorting or classifying solids
US2351870A (en) * 1940-12-26 1944-06-20 Allis Chalmers Mfg Co Combined ball mill and drier
US2362528A (en) * 1942-06-03 1944-11-14 Libbey Owens Ford Glass Co Preparation of fine cellulose flour
DE1138994B (de) * 1958-08-22 1962-10-31 Hazemag Hartzerkleinerung Mahlanlage
US3241774A (en) * 1963-08-06 1966-03-22 Jackering Gunter Method of comminuting thermoplastic materials

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3565349A (en) * 1968-05-10 1971-02-23 Creusot Forges Ateliers Installation for pulverizing and drying crude quarry products
US3754713A (en) * 1970-03-28 1973-08-28 Bayer Ag Separation of magnetizable particles
US3854666A (en) * 1973-01-29 1974-12-17 Gilbert Associates Process for pulverizing coal to ultrafine size
US4113187A (en) * 1976-05-08 1978-09-12 Klockner-Humboldt-Deutz Aktiengesellschaft Method and apparatus for drying and grinding
US20060243830A1 (en) * 2005-04-27 2006-11-02 Josephs Leroy R Auto shredder air scrubber
US20230080044A1 (en) * 2019-10-15 2023-03-16 Societe Financiere Industrielle Method and facility for continuous aeraulic separation of particulate materials consisting of a mixture of particules heterogeneous in both particle size and density
US12048933B2 (en) * 2019-10-15 2024-07-30 Societe Financiere Industrielle Method and facility for continuous aeraulic separation of particulate materials consisting of a mixture of particles heterogeneous in both particle size and density
CN115254374A (zh) * 2022-06-30 2022-11-01 徐州桐圣建材有限公司 一种能增加水泥原料的研磨效率的水泥加工用立磨装置
CN115254374B (zh) * 2022-06-30 2023-08-15 徐州桐圣建材有限公司 一种能增加水泥原料的研磨效率的水泥加工用立磨装置

Also Published As

Publication number Publication date
DK119389B (da) 1970-12-21
DE1281817B (de) 1968-10-31
GB1091963A (en) 1967-11-22
CH426442A (de) 1966-12-15

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