CN106277872A - The application in producing clinker of the iron cement containing caloric value - Google Patents

The application in producing clinker of the iron cement containing caloric value Download PDF

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Publication number
CN106277872A
CN106277872A CN201610665549.1A CN201610665549A CN106277872A CN 106277872 A CN106277872 A CN 106277872A CN 201610665549 A CN201610665549 A CN 201610665549A CN 106277872 A CN106277872 A CN 106277872A
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China
Prior art keywords
iron cement
caloric value
kiln
clinker
raw material
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CN201610665549.1A
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Chinese (zh)
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CN106277872B (en
Inventor
谢章飞
周海明
凌军
莫兰军
贾文峰
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China Resources Cement Technology R&D Co Ltd
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China Resources Cement Technology R&D Co Ltd
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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
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
    • C04B7/42—Active ingredients added before, or during, the burning process
    • C04B7/421—Inorganic materials
    • 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
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • C04B7/26—Cements from oil shales, residues or waste other than slag from raw materials containing flue dust, i.e. fly ash
    • 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
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention discloses the application in producing clinker of the iron cement containing caloric value, the method is in the fuel coal dust that the iron cement containing caloric value mixes burning clinker of cement, together grinding, the most together carry out calcining and chemical reaction in the kiln hood of rotary kiln and kiln tail spray into kiln, be different from iron cement being mixed at raw meal proportioning station of prior art.In the present invention, iron cement containing caloric value is in addition to as ferro-controlling raw material, also act as the effect of fuel, kiln system is sprayed into through kiln hood and kiln tail burner after it being mixed with coal, with raw material mixed calcining in the gas flow, avoiding raw material and hoard at kiln tail, because temperature is high, liquid phase occurs in advance, and grain is big, burn the problems such as impermeable to cause grog to be tied.The clinker quality that the present invention prepares is stable, and 3 days intensity increases by 0.1 0.4MPa, and grog mark coal consumption simultaneously can decline 3 10 kilograms, and ton grog cost can save about 1.44 6.56 yuan.

Description

The application in producing clinker of the iron cement containing caloric value
Technical field
The invention belongs to cement field, be specifically related to the application in producing clinker of the iron cement containing caloric value.
Background technology
After iron cement containing caloric value refers to that steel plant gather dust before smelting furnace, eject the bits as mud.Steel mill Produce every day 700-800 ton containing caloric value 700-3500 kilocalorie/kilogram iron cement waste residue.
At present, have raw-material as irony correction containing caloric value iron cement, mix at raw meal proportioning station, account for raw meal quality About 2%, monthly can consume 10,000 tons of iron cements Han caloric value；But this proportioning is the least, cannot answer on a large scale containing caloric value iron cement With.Energy conservation and consumption reduction effects is inconspicuous, and ton grog mark coal consumption only declines about 1 kilogram, and ton grog cost declines about 0.5 yuan.
If but making the accounting in raw material of the iron cement containing caloric value more than 2%, then cement clinker quality can be caused to decline, its reason Being that in calcination process, liquid phase occurs in advance, grog knot grain becomes big (> 40mm), burn impermeable, grog gold zone material is many, free calcium qualification rate <80%, 28 days intensity Cv of grog>1.7.
Summary of the invention
It is an object of the invention to overcome the defect of existing use technology, it is provided that the iron cement containing caloric value is ripe at production cement Application in material.
The purpose of the present invention is achieved through the following technical solutions:
The application in producing clinker of the iron cement containing caloric value, is the iron cement containing caloric value to be mixed clinker forge Burn fuel coal dust in, carry out calcining and chemical reaction in together entering kiln with coal dust, be different from prior art by ferrum Mud mixes at raw meal proportioning station；
Specifically comprise the following steps:
(1) by each raw material needed for sinter leaching, metering mixing is carried out by the proportion scheme designed at distribution station, then will Said mixture grinding is prepared as raw material, after deliver to homogenizing storehouse mix homogeneously, be then fed into preheater preheating；During Gai, ferrum The matter correction material iron cement containing caloric value does not carries out grinding with other raw materials and mixes；
(2) grinding after the iron cement containing caloric value being mixed with coal, the caloric value of iron cement coal mixture controls 5200 More than kilocalorie/kilogram, if less than this caloric value, situation of burning till is unstable, affects kiln yield and quality；
The consumption of iron cement determines according to the production of grog, proportion scheme etc. in step (1)；In step (2), The consumption of coal determines according to the caloric value of caloric value, the caloric value of unit iron cement, iron cement consumption and the unit coal of mixture, Computing formula is as follows:
Q=(QM×A+QN×B)÷(A+B)
The caloric value of Q-iron cement coal mixture, QMThe caloric value of-unit coal, A-coal consumption, QN-unit iron cement Caloric value, B-iron cement consumption；
(3) raw material after utilizing dore furnace to preheat step (1) carry out precalcining, are then fed into calcined by rotary kiln；? In calcination process, the iron cement coal mixture of step (2) is sprayed into from kiln hood and the kiln tail of rotary kiln, finally forging rotary kiln Burn product and send into cooling in coolant, obtain clinker.
Iron cement containing caloric value can be used for producing the grog of prior art all kinds cement, the proportion scheme therefore related to Requirement by prior art all kinds cement.It is preferably adapted to the clinker moduli and ripe containing the application of caloric value iron cement Expect mineral content respectively: saturation coefficient (KH) 0.920, silicon rate (SM) 2.35, aluminum rate (IM) 1.35；C3S (tricalcium silicate) 53- 55%, C2S (dicalcium silicate) 21-22%, C3A (tricalcium aluminate) 7-8%, C4AF (tetra calcium aluminoferrite) 11-12%.
In described step (3), iron cement coal mixture accounts for iron cement coal mixture quality from the ratio that kiln hood sprays into 30-40%, remaining sprays into from kiln tail.
The present invention has such advantages as relative to prior art and effect:
1, the iron cement containing caloric value is in addition to as ferro-controlling raw material, also acts as the effect of fuel, by itself and coal Kiln system, and raw material mixed calcining in the gas flow is sprayed into through kiln hood and kiln tail burner, it is to avoid raw material are hoarded at kiln after mixing Tail, because temperature is high, liquid phase occurs in advance, and grain is big, burn the problems such as impermeable to cause grog to be tied.
2, the clinker quality that the present invention prepares is stable, and within 3 days, intensity increases 0.1-0.4MPa, and grog mark coal consumption simultaneously can decline 3-10 kilogram, ton grog cost can be saved about 1.44-6.56 unit.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
The application in producing Portland clinker of the iron cement containing caloric value, comprises the following steps:
(1) each raw material is crushed, carry out metering mixing by the clinker moduli designed and clinker minerals content, then by above-mentioned Deliver to homogenizing storehouse mix homogeneously after mixture grinding, be then fed into preheater preheating；During Gai, ferro-controlling raw material be containing heating The iron cement of amount does not carries out grinding with other raw materials and mixes；
The iron cement used is purchased from Liuzhou Iron and Steel Works, its Fe2O3Content be 45-50%, unit caloric value is 1,500,000 Card/kilogram.
(2) grinding after the iron cement containing caloric value being mixed with coal, the coal used is Shanxi 5000 bituminous coal, its unit Caloric value is 5727 kilocalories/kilogram；The caloric value of iron cement coal mixture controls more than 5200 kilocalories/kilogram；
(3) raw material after utilizing dore furnace to preheat step (1) carry out precalcining, are then fed into calcined by rotary kiln；? In calcination process, the iron cement coal mixture of step (2) is sprayed into from kiln hood and the kiln tail of rotary kiln, iron cement coal mixture from The ratio that kiln hood sprays into accounts for the 35% of iron cement coal mixture quality, remaining sprays into from kiln tail；Iron cement coal mixture and life Expect mixed calcining in the gas flow；Finally the calcined product of rotary kiln is sent in coolant and cool down, obtain clinker.
Obtained its quality of clinker is shown in Table 1.
Table 1, the caloric value of iron cement coal mixture and the relation of cement clinker quality
As can be seen from Table 1, the grog that the inventive method is generated, compared with traditional method (i.e. without iron cement), solidifying The knot time does not changes much, and meets the requirements；Within 3 days, intensity increases 0.1-0.4MPa, and grog mark coal consumption simultaneously declines 3-10 kilogram, About ton grog cost savings 1.44-6.56 unit, reduce production cost meeting while technology requires.
Comparative example
Iron cement containing caloric value in the application produced in Portland clinker, be using containing caloric value iron cement as irony school The most raw-material, mix at raw meal proportioning station, other production links and parameter request compared with grog to generate method consistent.
Obtained its quality of clinker is shown in Table 2.
Table 2, iron cement incorporation and the relation of cement clinker quality
As can be seen from Table 2, iron cement is mixed from raw meal proportioning station, f-CaO and 3 days intensity during volume 2%, to grog Have begun to harmful effect, when reaching 4%, produced and cannot be normally carried out.The method of comparative example is not suitable for grog and produces.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not by above-described embodiment Limit, the change made under other any spirit without departing from the present invention and principle, modify, substitute, combine, simplify, All should be the substitute mode of equivalence, within being included in protection scope of the present invention.

Claims (3)

1. the application in producing clinker of the iron cement containing caloric value, it is characterised in that comprise the following steps:
(1) by each raw material needed for sinter leaching, metering mixing is carried out by the proportion scheme designed at distribution station, then by above-mentioned Mixture grinding is prepared as raw material, after deliver to homogenizing storehouse mix homogeneously, be then fed into preheater preheating；During Gai, irony school The positive raw material iron cement containing caloric value does not carries out grinding with other raw materials and mixes；
(2) grinding after the iron cement containing caloric value being mixed with coal, the caloric value of iron cement coal mixture control 5200 kilocalories/ More than kilogram；
(3) raw material after utilizing dore furnace to preheat step (1) carry out precalcining, are then fed into calcined by rotary kiln；In calcining During, the iron cement coal mixture of step (2) is sprayed into from kiln hood and the kiln tail of rotary kiln, finally the calcining of rotary kiln is produced Thing is sent in coolant and is cooled down, and obtains clinker.
The iron cement containing caloric value the most according to claim 1 application in producing clinker, it is characterised in that: described Step (3) in, iron cement coal mixture accounts for the 30-40% of iron cement coal mixture quality from the ratio that kiln hood sprays into, remaining Spray into from kiln tail.
The iron cement containing caloric value the most according to claim 1 application in producing clinker, it is characterised in that: step (1) in, clinker moduli that proportion scheme relates to and clinker minerals content respectively: saturation coefficient 0.920, silicon rate 2.35, aluminum rate 1.35；Tricalcium silicate 53-55%, dicalcium silicate 21-22%, tricalcium aluminate 7-8%, tetra calcium aluminoferrite 11-12%.
CN201610665549.1A 2016-08-12 2016-08-12 Application of the iron cement containing calorific value in producing clinker Active CN106277872B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106946330A (en) * 2017-03-31 2017-07-14 华南理工大学 A kind of method that chemical oxidation iron cement prepares water treatment agent
CN107352820A (en) * 2017-08-22 2017-11-17 亚太森博（山东）浆纸有限公司 A kind of application for the method and irony correction agent that cement irony correction agent is prepared to aoxidize iron cement mud as raw material
CN111499231A (en) * 2020-04-22 2020-08-07 宝武集团环境资源科技有限公司 Treatment method of iron and steel smelting dust and iron correction material
CN112680198A (en) * 2020-12-28 2021-04-20 上海明奥环保科技有限公司 Chemical heating material based on iron-containing sludge and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101463283A (en) * 2008-05-31 2009-06-24 陶小勇 Environment protection coal-saving agent for cement vertical kiln
CN104773967A (en) * 2014-04-22 2015-07-15 罗方跃 Cement clinker calcining method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101463283A (en) * 2008-05-31 2009-06-24 陶小勇 Environment protection coal-saving agent for cement vertical kiln
CN104773967A (en) * 2014-04-22 2015-07-15 罗方跃 Cement clinker calcining method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106946330A (en) * 2017-03-31 2017-07-14 华南理工大学 A kind of method that chemical oxidation iron cement prepares water treatment agent
CN106946330B (en) * 2017-03-31 2020-11-24 华南理工大学 Method for preparing water treatment agent from chemical iron oxide mud
CN107352820A (en) * 2017-08-22 2017-11-17 亚太森博（山东）浆纸有限公司 A kind of application for the method and irony correction agent that cement irony correction agent is prepared to aoxidize iron cement mud as raw material
CN107352820B (en) * 2017-08-22 2020-02-11 亚太森博（山东）浆纸有限公司 Method for preparing iron correction agent for cement by taking iron oxide mud as raw material and application of iron correction agent
CN111499231A (en) * 2020-04-22 2020-08-07 宝武集团环境资源科技有限公司 Treatment method of iron and steel smelting dust and iron correction material
CN112680198A (en) * 2020-12-28 2021-04-20 上海明奥环保科技有限公司 Chemical heating material based on iron-containing sludge and preparation method thereof

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