CN107311486A

CN107311486A - A kind of formula and processing technology of pulverized fuel ash cement

Info

Publication number: CN107311486A
Application number: CN201610263141.1A
Authority: CN
Inventors: 王志龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-04-26
Filing date: 2016-04-26
Publication date: 2017-11-03

Abstract

The present invention is the formula and its production technology for the pulverized fuel ash cement for being related to construction material, it is formulated the clay that traditional cements production is mainly replaced with 6-10% flyash, through same iron powder, lime stone, siliceous raw material, fluorite, after one, three coal hybrid process are levigate, mature calcined material mixes with low loss on ignition flyash, gypsum be milled into required pulverized fuel ash cement again, its technique, which is mainly, uses classified storage, it is homogenized respectively, " trichotomy " being used separately；" two is high " dispensing is high-sulfur, the method and cement superfine grinding of high alumina and material.The invented technology is simple, and product cost is low, and quality is good, beneficial to promoting the use of, and has huge economic and social benefit.

Description

A kind of formula and processing technology of pulverized fuel ash cement

Technical field

The present invention is to be related to a kind of formula and processing technology of the pulverized fuel ash cement of construction material.

Background technology

Cement is a large amount of and conventional construction materials, and the production of cement mostly be admixture clay and other raw materials fire and Into still, power plants are more, and power plant can discharge substantial amounts of flyash, not only govern the development of electric power, and endanger The physical and mental health of the mankind, thus flyash utilization always people want solve the problem of, flyash is also utilized in practice Cement is produced, but is due to that, using conventional equipment and its production technology, dispensing is also scientific and reasonable not to the utmost, and doping quantity of fly ash does not conform to It is suitable, therefore product quality is not high, using being restricted.

The content of the invention

It is an object of the invention to provide a kind of formula of new utilization flyash production cement and its production technology, so that Open up the approach of a new manufacture of cement.

The object of the present invention is achieved like this, is high alumina, high-sulfur dispensing using " two is high ", " three is used to flyash Point-score " is used, i.e., according to the height of flyash vector, its classified storage is homogenized respectively, is used separately, and uses superfine grinding Technique also may be used.

Present invention production cement quality is high, profitable, especially production early-strength and plain edition 425^#Cement, more high-quality, And the present invention pollutes for realization generating, building materials, elimination, saves and resource integrated can open new way.

It is invented with reference to embodiments and elaborated.

The production technology of pulverized fuel ash cement is：By power plant through Geldart-D particle（Gas pipeline is conveyed）The flyash come, according to The height of fine coal loss on ignition, by its classified storage, title high loss on ignition fly ash of the loss on ignition more than 8%, loss on ignition is below 8% Title low loss on ignition flyash, after classification, respectively it is homogenizing again, be used separately, this claims " trichotomy ", through " trichotomy " handle Afterwards, the flyash of high loss of ignition is to replace the clay that traditional cements are produced, low loss on ignition（High activity ash）As mixing material, adopt Take after this PROCESS FOR TREATMENT, make flyash loss on ignition low 3-4 percentage points, be conducive to the production of pulverized fuel ash cement, it is particularly early The production of strong type cement, after being handled through " trichotomy ", flyash and the cement convenient source of high loss of ignition carry out dispensing, during dispensing Using " two is high " dispensing method, i.e. high-sulfur of science, high alumina dispensing method, make SO in clinker₃In 2-3%, Al₂O₃6-6.5% it Between, its clinker formula is（Weight ratio）：

High loss on ignition fly ash 6-10%

Iron powder 1.5-3%

Lime stone 82-66.5%

Silico-regulating material 2-6%

Fluorite 0.5-1.5%

First, three coal 8-13%

Other raw materials beyond high loss on ignition fly ash when in use, after being crushed through I and II, are stored up with elevator feeding raw material Storehouse, then carried out with microcomputer in dispensing, above-mentioned formula plus high loss on ignition fly ash is to realize composition containing high alumina, plus one, three coals are with reality Now contain high sulfur content, i.e. " two is high " dosing method, the purpose is to the increase by early strong material, cause clinker to coagulate soon, initial set is 10 To 20 minutes, final set was 15 to 50 minutes, and this also creates favourable condition for a large amount addition of later process flyash, and material is matched somebody with somebody After good, raw material drying and grinding mill is sent into, levigate, the homogenizing through Geldart-D particle to continous way is carried out, plasticizing storehouse is homogenizing, plasticizing makes Its raw material qualification rate reaches 90-100%, meanwhile, by the high-ductility dust produced by disk tower machine vertical kiln（Crystal seed and plasticizing are expected）With Glass Fibre Bag collect, after recovery with Geldart-D particle to be homogenized, plasticizing storehouse in above-mentioned formula raw material carry out again, plastify, So as to improve the performance of flyash dispensing plasticity difference, this is also one of creation point of the present invention, afterwards, through gas pipeline（Strength Conveying）Disk tower machine vertical kiln is sent to, through the pan-pelletizer that adds water that gives on the kiln, water mixing is adopted and computerizedd control, and makes its wet bulb intensity Up to 710-770 grams, dry bulb intensity reaches 1705-1350 grams, after balling-up, enters people's disk tower machine vertical kiln, in 1300-1350 DEG C of temperature It is lower to be calcined, calcine and carried out for continuity, as clinker, and with after power plant's furnace bottom wet slag cooling, in the lump into clinker bank, Afterwards, by clinker and the low loss on ignition flyash after homogenizing（As mixing material）, gypsum is in clinker and the progress of flyash dispensing storehouse Dispensing, its formula is（By taking R type pulverized fuel ash cements as an example）：（Weight ratio）

Clinker 75-58%,

Low loss on ignition flyash 25-40%,

Gypsum 0-2%,

Wherein gypsum be used for adjust cement setting time, by it is required through microcomputer match somebody with somebody honest material after, with 2.2 × 12m of φ superfine cement Mill carry out it is levigate, its grinding rate control in 0.08 square hole screen screen over-size 1-4%, the equipment be the present invention main manufacturing process it One, using high-sulfur dispensing, simplify plastering, this be also the present invention distinctive feature, through superfine cement mill it is levigate after, warp The Geldart-D particle feeding cement bunker of gas pipeline, further according to needing to carry out dissipating bag or packaging, just can sell and use.

In above-mentioned technique productions, the batching control in each stage, the addition of flyash, the control of the parameter such as finish fineness Value, depending on being required according to user the difference of product, such as 425^#Ordinary cement, the volume of flyash can capping, fineness is relative Control is a little thick, and 425R type cement, and the addition content of flyash is removed the limit, and fineness control is relative thin, and flyash water content will Less than 1%, ash is sent to ensure with dry method, other raw materials are identical to ingredient requirement with traditional cements.In embodiment, such as give birth to Production 425^#Cement increases loss on ignition fine coal sand 9%, makes SO in clinker₃Control is in 2.7%, AL₂O₃Control is 6.3%, and wet bulb intensity is 745 grams, dry bulb intensity is 1750 grams, and low loss on ignition flyash 33% is mixed in the clinker burnt till, and cement fineness is controlled 3.5% （0.08 square hole screen over-size）.

From the foregoing, present invention production cement industry is simple, the high-value-use of flyash and thick slag is efficiently solved Problem, is that country can save substantial amounts of water resource, mineral resources, fuel, soil etc., is that the development of electric power creates good bar Part, also opens a new way for manufacture of cement, and the cement quality of this invention production is good, and cost is low, is easy to popularization to make With huge economic benefit and social benefit can be produced.

Claims

1. a kind of Formulations Formula of pulverized fuel ash cement is characterized in that：(1. weight ratio) A, clinker formula are：High loss of ignition powder Coal ash 6-10% iron powder 1.5-3% lime stone 82-66.5% silico-regulating material 2-6% fluorites 0.5-1.5% mono-, three Coal 8-13%, B, clinker 75-58% low loss on ignition flyash 25-40% gypsum 0-2%.

2. realize that the production technology of fine coal production pulverized fuel ash cement is characterized by：By flyash of the power plant through Geldart-D particle, according to The height of flyash loss on ignition（It is high loss of ignition more than 8%, is low loss on ignition less than 8%）By its classified storage, it is homogenized respectively, point Open using i.e. " trichotomy ", after being handled through " trichotomy ", the flyash of high loss of ignition is adopted with the raw material after I and II is broken It is the dispensing method of " two is high " with high-sulfur, high alumina, by claim 1（A）The formula carries out dispensing, afterwards, uses drying material Mill carries out levigate, then homogenizing with Geldart-D particle to continous way, plasticizing storehouse are homogenizing, plasticizing, meanwhile, by disk tower machine vertical kiln The dust of produced high-ductility is re-fed into homogenizing, plasticizing and together carried out with the levigate raw material of raw material drying and grinding mill in storehouse after reclaiming Change, plasticizing, afterwards, then by Geldart-D particle to disk tower machine vertical kiln give the pan-pelletizer that adds water, adding water is made wet bulb and enters Pan Ta Formula boiler-turbine CCS is calcined at high temperature, as clinker, after power plant's stove low humidity slag cooling, is stored in clinker bank, afterwards, then will After clinker, homogenizing low loss on ignition flyash, gypsum press claim 1（B）The recipe requirements carry out dispensing, and use ultra-fine water Mud mill progress is levigate, and through Geldart-D particle to cement bunker, in bulk or bag packing and selling just can be carried out as needed.

3. the production technology of pulverized fuel ash cement according to claim 2, it is characterised in that described " two is high " dispensing method It is to make SO in clinker₃Content is in 2-3%, AL₂O₃Content is in 6-6.5%.

4. the production technology of pulverized fuel ash cement according to claim 2, it is characterised in that described warm ball intensity is 710- 770 grams, dry-bulb temperature is 1705-1350 grams, and disk tower machine vertical kiln calcining heat is 1300-1350 DEG C.

5. the production technology of pulverized fuel ash cement according to claim 2, it is characterised in that described to have superfine cement mill progress Levigate, its fineness is controlled in 0.08 square hole screen screen over-size 1-4%.