CN114752865A - Lining plate for large ball mill - Google Patents

Lining plate for large ball mill Download PDF

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Publication number
CN114752865A
CN114752865A CN202210439808.4A CN202210439808A CN114752865A CN 114752865 A CN114752865 A CN 114752865A CN 202210439808 A CN202210439808 A CN 202210439808A CN 114752865 A CN114752865 A CN 114752865A
Authority
CN
China
Prior art keywords
lining plate
ball mill
large ball
percent
mass
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.)
Pending
Application number
CN202210439808.4A
Other languages
Chinese (zh)
Inventor
赵东凯
明章林
刘伟
汪海宁
杨霄
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.)
Ningguo Dongfang Milling Material Co ltd
Original Assignee
Ningguo Dongfang Milling Material Co ltd
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 Ningguo Dongfang Milling Material Co ltd filed Critical Ningguo Dongfang Milling Material Co ltd
Priority to CN202210439808.4A priority Critical patent/CN114752865A/en
Publication of CN114752865A publication Critical patent/CN114752865A/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/22—Lining for containers
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron

Abstract

The invention discloses a lining plate for a large ball mill, which comprises the following chemical components in percentage by mass: c: 0.37-0.45%, Cr: 1.08-1.4%, Ni: 0.28-0.42%, Mo: 0.3-0.55%, Mn: 1.21-1.35%, Si: 0.85-1.1%, Ta + La + Y: 0.018-0.042%, B: 0.002-0.005%, Nb: 0.005-0.034%, Sn: 0.01-0.015%, Cu: 0.05-0.18 percent of Fe, less than or equal to 0.03 percent of P, less than or equal to 0.03 percent of S and the balance of Fe. The lining plate for the large ball mill provided by the invention has the advantages of high hardness, good toughness, excellent wear resistance and long service life.

Description

Lining plate for large ball mill
Technical Field
The invention relates to the technical field of wear-resistant materials, in particular to a lining plate for a large ball mill.
Background
The lining plate of the ball mill is a common consumption part in production, the using amount is large, the lining plate mainly plays a role in protecting a mill, grinding balls are taken up by utilizing the convex peaks of the lining plate, materials are ground and crushed, and during the operation process of the ball mill, ore grinding media and minerals are flushed, thrown and centrifugally moved to generate larger kinetic energy to continuously impact the lining plate of the ball mill, so that the abrasion of the lining plate is caused, and the service life of the lining plate is directly influenced by the abrasion resistance. With the development of material grinding technology, the ball mill tends to be large-sized, the working conditions of the lining plate are increasingly harsh, and the existing lining plate for the large ball mill has the defects of low hardness and poor impact toughness, so that the application of the lining plate is limited.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a lining plate for a large ball mill, which has the advantages of high hardness, good toughness, excellent wear resistance and long service life.
The invention provides a lining plate for a large ball mill, which comprises the following chemical components in percentage by mass: c: 0.37-0.45%, Cr: 1.08-1.4%, Ni: 0.28-0.42%, Mo: 0.3-0.55%, Mn: 1.21-1.35%, Si: 0.85-1.1%, Ta + La + Y: 0.018-0.042%, B: 0.002-0.005%, Nb: 0.005-0.034%, Sn: 0.01-0.015%, Cu: 0.05 to 0.18 percent of Fe, less than or equal to 0.03 percent of P, less than or equal to 0.03 percent of S and the balance of Fe.
Preferably, the chemical composition of the alloy comprises the following chemical components in percentage by mass of Ta, La and Y: 3 × Ta ═ La +2 × Y.
Preferably, in the chemical composition, the mass percentages of Cr, Mn and Mo satisfy the following relational expression: cr + Mn is 2 × Mo + 2%.
Preferably, the lining plate for the large ball mill comprises the following chemical components in percentage by mass: c: 0.42%, Cr: 1.4%, Ni: 0.36%, Mo: 0.31%, Mn: 1.22%, Si: 0.9%, Ta: 0.01%, La: 0.018%, Y: 0.006%, B: 0.003%, Nb: 0.02%, Sn: 0.012%, Cu: 0.12 percent, less than or equal to 0.03 percent of P, less than or equal to 0.03 percent of S and the balance of Fe.
Preferably, the lining plate for the large ball mill is subjected to the following heat treatment: heating to 900-980 ℃ for heat preservation, cooling to room temperature at the speed of T ℃/s, heating to 220-270 ℃ for heat preservation, and naturally cooling to room temperature; wherein, T is 300 XCNb/CC，CNb、CCRespectively the mass percentage of Nb and C.
Preferably, the temperature is increased to 900-.
Preferably, the temperature is increased to 220-270 ℃ and the temperature is kept for 60-150 min.
According to the lining plate for the large ball mill, C, Cr, Ni, Mo, Mn, Si, Ta, La, Y, B, Nb, Sn, Cu and the like are added as chemical components, the content of each element is optimized, the material has enough hardenability and hardenability, the good matching of hardness and toughness is achieved through specific heat treatment, the wear resistance of the obtained lining plate is excellent, and the service life is long; in a preferred mode, the mass percentages of Ta, La and Y are specifically regulated and controlled to meet the relation of 3 × Ta ═ La +2 × Y, so that the number and size of inclusions in a system are obviously reduced, the strength, hardness and impact toughness of steel are improved, and the wear resistance of the lining plate is obviously improved; the mass percentages of Cr, Mn and Mo satisfy the relation that Cr + Mn is 2 XMo + 2%, thereby obviously increasing the hardenability of the lining plate, improving the hardness and strength of the lining plate and simultaneously preventing the tempering brittleness; during the heat treatment of the lining plate, the cooling rate of quenching is specifically controlled so that T is 300 × CNb/CC，CNb、CCThe mass percentages of Nb and C respectively regulate and control the structure of the matrix, increase the impact toughness of the lining plate, and ensure that the lining plate has high hardness, good impact toughness and excellent wear resistance after subsequent heat treatment.
The hardness of the lining plate for the large ball mill reaches above 59HRC, the tensile strength is greater than 1300MPa, and the impact toughness is greater than or equal to 44J/cm2When the ball mill is used on a large-scale ball mill, the service life of the ball mill is improved by more than 470 percent compared with that of a ZGMn13Cr2 lining plate.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Example 1
The invention provides a lining plate for a large ball mill, which comprises the following chemical components in percentage by mass: c: 0.45%, Cr: 1.25%, Ni: 0.29%, Mo: 0.3%, Mn: 1.35%, Si: 1.05%, Ta: 0.013%, La: 0.019%, Y: 0.01%, B: 0.004%, Nb: 0.009%, Sn: 0.014%, Cu: 0.07%, P: 0.03%, S: 0.03 percent, and the balance being Fe;
the lining plate for the large ball mill is subjected to the following heat treatment: heating to 980 deg.C, maintaining the temperature for 30min, cooling to room temperature at 6 deg.C/s, heating to 270 deg.C, maintaining the temperature for 60min, and naturally cooling to room temperature.
Example 2
The invention provides a lining plate for a large ball mill, which comprises the following chemical components in percentage by mass: c: 0.45%, Cr: 1.4%, Ni: 0.42%, Mo: 0.33%, Mn: 1.26%, Si: 0.85%, Ta: 0.0055%, La: 0.0105%, Y: 0.003%, B: 0.005%, Nb: 0.03%, Sn: 0.011%, Cu: 0.05%, P: 0.03%, S: 0.03 percent, and the balance being Fe;
the lining plate for the large ball mill is subjected to the following heat treatment: heating to 900 deg.C, maintaining for 90min, cooling to room temperature at 20 deg.C/s, heating to 220 deg.C, maintaining for 150min, and naturally cooling to room temperature.
Example 3
The invention provides a lining plate for a large ball mill, which comprises the following chemical components in percentage by mass: c: 0.38%, Cr: 1.39%, Ni: 0.4%, Mo: 0.3%, Mn: 1.21%, Si: 0.89%, Ta: 0.006%, La: 0.01%, Y: 0.004%, B: 0.002%, Nb: 0.0304%, Sn: 0.015%, Cu: 0.13%, P: 0.03%, S: 0.03 percent, and the balance being Fe;
the lining plate for the large ball mill is subjected to the following heat treatment: heating to 920 deg.C, maintaining the temperature for 80min, cooling to room temperature at 24 deg.C/s, heating to 250 deg.C, maintaining the temperature for 120min, and naturally cooling to room temperature.
Example 4
The invention provides a lining plate for a large ball mill, which comprises the following chemical components in percentage by mass: c: 0.4%, Cr: 1.4%, Ni: 0.42%, Mo: 0.375%, Mn: 1.35%, Si: 1.1%, Ta: 0.011%, La: 0.017%, Y: 0.008%, B: 0.002%, Nb: 0.012%, Sn: 0.01%, Cu: 0.18%, P: 0.01%, S: 0.02 percent and the balance of Fe;
the lining plate for the large ball mill is subjected to the following heat treatment: heating to 970 deg.C, holding for 40min, cooling to room temperature at the speed of 9 deg.C/s, heating to 245 deg.C, holding for 90min, and naturally cooling to room temperature.
Example 5
The invention provides a lining plate for a large ball mill, which comprises the following chemical components in percentage by mass: c: 0.4%, Cr: 1.39%, Ni: 0.28%, Mo: 0.3%, Mn: 1.21%, Si: 1.1%, Ta: 0.013, La: 0.019, Y: 0.01%, B: 0.003%, Nb: 0.006%, Sn: 0.013%, Cu: 0.18%, P: 0.03%, S: 0.03 percent, and the balance being Fe;
the lining plate for the large ball mill is subjected to the following heat treatment: heating to 950 deg.C, maintaining for 45min, cooling to room temperature at 4.5 deg.C/s, heating to 265 deg.C, maintaining for 140min, and naturally cooling to room temperature.
Example 6
The invention provides a lining plate for a large ball mill, which comprises the following chemical components in percentage by mass: c: 0.42%, Cr: 1.4%, Ni: 0.36%, Mo: 0.31%, Mn: 1.22%, Si: 0.9%, Ta: 0.01%, La: 0.018%, Y: 0.006%, B: 0.003%, Nb: 0.02%, Sn: 0.012%, Cu: 0.12%, P: 0.02%, S: 0.02 percent and the balance of Fe;
the lining plate for the large ball mill is subjected to the following heat treatment: heating to 945 deg.C, maintaining for 70min, cooling to room temperature at 14.3 deg.C/s, heating to 230 deg.C, maintaining for 80min, and naturally cooling to room temperature.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.

Claims (7)

1. The lining plate for the large ball mill is characterized by comprising the following chemical components in percentage by mass: c: 0.37-0.45%, Cr: 1.08-1.4%, Ni: 0.28-0.42%, Mo: 0.3-0.55%, Mn: 1.21-1.35%, Si: 0.85-1.1%, Ta + La + Y: 0.018-0.042%, B: 0.002-0.005%, Nb: 0.005-0.034%, Sn: 0.01-0.015%, Cu: 0.05-0.18 percent of Fe, less than or equal to 0.03 percent of P, less than or equal to 0.03 percent of S and the balance of Fe.
2. The liner plate for a large ball mill according to claim 1, wherein the chemical composition of Ta, La and Y satisfies the following relationship: la +2 × Y.
3. The lining plate for a large ball mill according to claim 1 or 2, wherein the chemical composition of the lining plate comprises, by mass, Cr, Mn and Mo which satisfy the following relationship: cr + Mn is 2 × Mo + 2%.
4. The liner plate for a large ball mill according to any one of claims 1 to 3, wherein the chemical components thereof comprise, by mass: c: 0.42%, Cr: 1.4%, Ni: 0.36%, Mo: 0.31%, Mn: 1.22%, Si: 0.9%, Ta: 0.01%, La: 0.018%, Y: 0.006%, B: 0.003%, Nb: 0.02%, Sn: 0.012%, Cu: 0.12 percent, less than or equal to 0.03 percent of P, less than or equal to 0.03 percent of S and the balance of Fe.
5. The liner for a large ball mill according to any one of claims 1 to 4, which is heat-treated by: heating to 900-980 ℃ for heat preservation, cooling to room temperature at the speed of T ℃/s, heating to 220-270 ℃ for heat preservation, and naturally cooling to room temperature; wherein, T is 300 XCNb/CC，CNb、CCRespectively the mass percentage of Nb and C.
6. The lining plate for large ball mills according to claim 5, which is heated to 900-980 ℃ and kept for 30-90 min.
7. The liner plate for large ball mills according to claim 5 or 6, wherein the liner plate is heated to 220 ℃ and 270 ℃ and is subjected to heat preservation for 60-150 min.
CN202210439808.4A 2022-04-25 2022-04-25 Lining plate for large ball mill Pending CN114752865A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210439808.4A CN114752865A (en) 2022-04-25 2022-04-25 Lining plate for large ball mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210439808.4A CN114752865A (en) 2022-04-25 2022-04-25 Lining plate for large ball mill

Publications (1)

Publication Number Publication Date
CN114752865A true CN114752865A (en) 2022-07-15

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ID=82332894

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210439808.4A Pending CN114752865A (en) 2022-04-25 2022-04-25 Lining plate for large ball mill

Country Status (1)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0841535A (en) * 1994-07-29 1996-02-13 Nippon Steel Corp Production of high hardness wear resistant steel excellent in low temperature toughness
CN105506504A (en) * 2014-09-26 2016-04-20 鞍钢股份有限公司 Ultrahigh-strength wear-resisting steel plate and production method thereof
CN114051540A (en) * 2019-06-28 2022-02-15 日本制铁株式会社 Steel plate

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0841535A (en) * 1994-07-29 1996-02-13 Nippon Steel Corp Production of high hardness wear resistant steel excellent in low temperature toughness
CN105506504A (en) * 2014-09-26 2016-04-20 鞍钢股份有限公司 Ultrahigh-strength wear-resisting steel plate and production method thereof
CN114051540A (en) * 2019-06-28 2022-02-15 日本制铁株式会社 Steel plate

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