CN103626462B - Autoclaved yellow phosphorus slag pavement brick and making method thereof - Google Patents

Autoclaved yellow phosphorus slag pavement brick and making method thereof Download PDF

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CN103626462B
CN103626462B CN201310533643.8A CN201310533643A CN103626462B CN 103626462 B CN103626462 B CN 103626462B CN 201310533643 A CN201310533643 A CN 201310533643A CN 103626462 B CN103626462 B CN 103626462B
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yellow phosphorus
slag
phosphorus furnace
phosphogypsum
furnace slag
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CN103626462A (en
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杨永彬
杨步雷
徐韦洪
向前勇
刘敏
刘小成
邹国军
宋维相
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Guizhou Kailin Group Co Ltd
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Abstract

The invention discloses an autoclaved yellow phosphorus slag pavement brick and a making method thereof. The autoclaved yellow phosphorus slag pavement brick is made of yellow phosphorus slag powder, granular yellow phosphorus slag, quicklime powder and phosphogypsum. The making method comprises the steps of: grinding the dried yellow phosphorus slag into powder; then mixing the granular yellow phosphorus slag with the quicklime powder and the phosphogypsum, adding water, stirring and uniformly mixing; making a brick blank body; autoclaving to make the autoclaved yellow phosphorus slag pavement brick. The autoclaved yellow phosphorus slag pavement brick disclosed by the invention is superior to a common pavement brick product, and is simple in ingredients so that the input of types of raw materials is reduced; yellow phosphorus slag with different finenesses is matched to be used as a compound exciting agent, thus an unexpected effect is achieved; in a making process, a better exciting condition is provided, the production process is easy to control, and the product quality is more stable; in a case where no cement is used, the strength is enabled to reach the use requirement of the pavement brick, the production cost is lowered, and the yellow phosphorus slag resources are effectively utilized; although the consumption of the phosphogypsum is reduced, the problem that an autoclaved phosphorus slag brick is not suitable for pavement building is solved.

Description

A kind of steam pressure yellow phosphorus furnace slag pavior brick and preparation method thereof
Technical field
The present invention relates to building material field, particularly relate to a kind of steam pressure yellow phosphorus furnace slag pavior brick and preparation method thereof.
Background technology
As the intermediates of thermal phosphoric acid, the demand of yellow phosphorus grows with each passing day.Accordingly, the yellow phosphorus furnace slag produced in phosphorus production process also increases thereupon.Yellow Phosphorous Slag be in phosphorus production process by phosphatic rock, quartz, coke in electric arc furnace, with about 1600 DEG C high melts, following reaction occurs and the waste residue of discharging, it mainly consists of CasiO 3:
2Ca 3(PO 4) 2+6SiO 2+10C→6CasiO 3+10CO↑+P 4
At present, domestic 1t yellow phosphorus of often producing is by generation 8 ~ 10t yellow phosphorus furnace slag.Due to yellow phosphorus furnace slag without control discharge, very easily expendable pollution is caused to the air of periphery, water, soil and ecotope.The domestic effective rate of utilization to yellow phosphorus furnace slag is very low at present.
According to incompletely statistics, the every annual emissions of phosphogypsum slag of China has reached 4,000 ten thousand more than t, and utilization ratio is only 4.1%-4.5%.At present, domestic phosphorous chemical industry enterprise creates a large amount of phosphogypsum in Wet-process Phosphoric Acid Production process, causes detrimentally affect to environment.How effectively process phosphogypsum slag has become the difficult problem that phosphorous chemical industry enterprise faces.
Pavior brick, refers to a kind of pavement, mainly with cement, stone, sand does raw material, makes through processing, vibration pressurization or other moulding processs, for the block, plate etc. of the concrete road surface and ground surface works of laying urban road walkway, city square etc., higher to the requirement of strength of brick.In the prior art, common pavior brick take cement as the concrete road pavement brick of main raw material, because pavior brick consumption is very large, and higher to requirement of strength, therefore its production cost is higher.But, in the prior art, although the autoclaved brick cost made for main raw material with phosphogypsum and/or phosphorus slag is lower, is all unsuitable for road surface and builds by laying bricks or stones.
A kind of autoclaved phosphogypsum brick and preparation method thereof disclosed in CN101684675B, it is prepared by the raw material of following weight part and obtain: phosphogypsum 60-80 part, in and properties-correcting agent 3.9-7.8 part, active admixture 15-30 part, cementing aggregate 1-2 part, exciting agent 0.1-0.2 part, water 10-15 part, in described and properties-correcting agent be carbide slag or lime mud, described active fusion material is any one or a few in zinc abstraction grain slag, the coal-fired slag of fluidizing furnace, the coal-fired slag of chain grate furnace, described cementing aggregate is building sand, and described exciting agent is saltcake or Sodium sulfate anhydrous.min(99).The weak point of the program is, adopts phosphogypsum as main raw material, fluorochemical wherein, free phosphoric acid, P 2o 5, the impurity such as phosphoric acid salt easily causes environmental pollution; Adopt saltcake or Sodium sulfate anhydrous.min(99) as exciting agent, stimulation effect is not ideal enough, and improves production cost; Obtained autoclaved phosphogypsum brick intensity only reaches 15 ~ 30MPa, cannot meet the actual use needs of pavior brick.And for example autoclaved phosphogypsum brick and preparation method thereof disclosed in CN101519896B, be dihydrate gypsum 40-70% by weight proportion, phosphorus slag powder or cement 15-45%, lime 2-6%, the material of aggregate 10-25% adds water and is stirred to moisture 8 ~ 10%, the mould making blank feeding automatic hydraulic brick molding press is pressed into adobe, and the saturation steam maintenance through 0.8 ~ 1.3MPA forms; Described consolidating material is phosphorus slag powder or cement; Described aggregate be particle at 1 ~ 5mm, containing SiO 2the sand of >40%, aggregate chips or slag.The deficiency of this technical scheme is, dihydrate gypsum in the feed proportion is larger, be suitable for building wall and be unsuitable for road surface building by laying bricks or stones, because the not high enough and water content of its ultimate compression strength can change and produce larger volume change, build by laying bricks or stones may cause pavement cracking for road surface.Visible, steam pressure phosphorus slag brick is not suitable for road surface and builds by laying bricks or stones.
Summary of the invention
The object of the present invention is to provide a kind of steam pressure yellow phosphorus furnace slag pavior brick and preparation method thereof, solve the problem that in prior art, yellow phosphorus furnace slag effective rate of utilization is low, big for environment pollution, and common phosphorus slag brick intensity is not high, cost is high, be unsuitable for the problem of building by laying bricks or stones on road surface.
A kind of steam pressure yellow phosphorus furnace slag pavior brick, be made up of yellow phosphorus furnace slag powder or granule yellow phosphorus furnace slag, calcium lime powder, phosphogypsum, the mass percent of described raw material is:
Yellow phosphorus furnace ground-slag 30% ~ 60%;
Granular yellow phosphorus furnace slag 20% ~ 55%;
Calcium lime powder 0.5% ~ 5%;
Phosphogypsum 5% ~ 20%.
Further, the mass percent of described raw material is:
Yellow phosphorus furnace ground-slag 40% ~ 50%;
Granular yellow phosphorus furnace slag 30% ~ 45%;
Calcium lime powder 2% ~ 5%;
Phosphogypsum 10% ~ 15%.
Further, the mass percent of described raw material is:
Yellow phosphorus furnace ground-slag 45%;
Granular yellow phosphorus furnace slag 40%;
Calcium lime powder 3%;
Phosphogypsum 12%.
Described yellow phosphorus furnace slag is Water Quenching Slag, its P 2o 5content≤4.5%.
The fineness of described Yellow phosphorus furnace ground-slag is 200 orders, sieving rate >=90%.
The fineness of described granular yellow phosphorus furnace slag is at 1.0 ~ 5.0mm.
Effective CaO content >=50% of described calcium lime powder, fineness is 200 orders, sieving rate >=75%.
P in described phosphogypsum 2o 5content≤3.5%, water content is 10 ~ 12%.
The making method of above-mentioned steam pressure yellow phosphorus furnace slag pavior brick, is characterized in that: be made up in accordance with the following methods of yellow phosphorus furnace slag powder or granule yellow phosphorus furnace slag, calcium lime powder, phosphogypsum:
(1) yellow phosphorus furnace slag of drying is ground to form powder, obtain Yellow phosphorus furnace ground-slag;
(2) Yellow phosphorus furnace ground-slag step (1) obtained and granular yellow phosphorus furnace slag and calcium lime powder and phosphogypsum are prepared burden by mass percentage, obtain mixed dry material;
(3), after being added water by the mixed dry material that step (2) obtains and being uniformly mixed, the mixture that water content is 7% ~ 10% is obtained;
(4) utilize brick press that step (3) is obtained mixture and make adobe body;
(5) finished product is obtained by the maintenance of 1.55 ~ 1.65MPa saturation steam.
Beneficial effect of the present invention:
Compared with prior art, steam pressure yellow phosphorus furnace slag pavior brick of the present invention is better than common pavior brick product, and its composition is simple, decreases the input of raw material type, adopts the collocation of the yellow phosphorus furnace slag of different fineness to be used as compound activator, achieves beyond thought effect; In making processes, by the arrangement of making step, provide good shooting conditions, and production process is easy to control, quality product is comparatively stable; When not using cement, both proof strength reached the service requirements of pavior brick, reduced production cost, effectively make use of yellow phosphorus furnace slag resource again, avoided the disadvantageous effect of yellow phosphorus furnace slag to ecotope; Although reduce the consumption of phosphogypsum, solve the problem that common steam pressure phosphorus slag brick is unsuitable for being used as pavior brick simultaneously.Adopt the pavior brick that the present invention produces, ultimate compression strength can reach 30 ~ 65MPa, and folding strength is at 7.0 ~ 20.0MPa, and fastness to rubbing >=1.2, water-intake rate≤10%, is applicable to the main construction in highway engineering and public works and decorative engineering.
The main component of yellow phosphorus furnace slag is CaO and SiO 2, both total contents, on average more than 90%, also have a small amount of TiO in addition 2, Fe 2o 3, P 2o 5, MgO, F, K 2o and Na 2o etc.Applicant after years of research and found that, the Yellow phosphorus furnace ground-slag of powdery and granular yellow phosphorus furnace slag have potential activator effect, and the yellow phosphorus furnace slag that meaning and fineness acquire a certain degree can play the effect of exciting agent.The present invention's yellow phosphorus furnace slag used is Water Quenching Slag, its P 2o 5content≤4.5%, the fineness of Yellow phosphorus furnace ground-slag is 200 order sieving rate>=90%; The fineness of granular yellow phosphorus furnace slag is at 1.0 ~ 5.0mm; Effective CaO content>=50% of calcium lime powder, fineness is 200 orders, sieving rate>=75%; P in phosphogypsum 2o 5content≤3.5%, water content are 10 ~ 12%.Pavior brick for obtained high compressive strength has established basic substance.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is described.The following stated is preferred embodiment of the present invention, can be used for explaining and supporting the present invention, but any pro forma restriction is not done to the present invention, anyly do not depart from technical solution of the present invention content, and simple modification following examples to be done according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Embodiment 1
Raw material preparation is carried out, Yellow phosphorus furnace ground-slag 3600kg, granular yellow phosphorus furnace slag 1200kg, calcium lime powder 180kg, phosphogypsum 1020kg by 2000 pieces of bulge test amounts.
First the yellow phosphorus furnace slag of drying is ground to form powdery; Again Yellow phosphorus furnace ground-slag and granular yellow phosphorus furnace slag and calcium lime powder and phosphogypsum are carried out even batching in proportion; Add water again and be uniformly mixed, control its water content 7%; Brick press is utilized to make adobe body; Finished product is obtained by the maintenance of 1.55MPa saturation steam.
Finished product detection result:
Ultimate compression strength: 64.7MPa;
Folding strength: 20.8MPa;
Fastness to rubbing: 1.5;
Water-intake rate: 6.9%.
Embodiment 2
Raw material preparation is carried out, Yellow phosphorus furnace ground-slag 1800kg, granular yellow phosphorus furnace slag 3300kg, calcium lime powder 130kg, phosphogypsum 770kg by 2000 pieces of bulge test amounts.
First the yellow phosphorus furnace slag of drying is ground to form powdery; Again Yellow phosphorus furnace ground-slag and granular yellow phosphorus furnace slag and calcium lime powder and phosphogypsum are carried out even batching in proportion; Add water again and be uniformly mixed, control its water content 8%; Brick press is utilized to make adobe body; Finished product is obtained by the maintenance of 1.60MPa saturation steam.
Finished product detection result:
Ultimate compression strength: 55.3MPa;
Folding strength: 17.8MPa;
Fastness to rubbing: 1.2;
Water-intake rate: 6.9%.
Embodiment 3
Raw material preparation is carried out, Yellow phosphorus furnace ground-slag 2400kg, granular yellow phosphorus furnace slag 3000kg, calcium lime powder 100kg, phosphogypsum 500kg by 2000 pieces of bulge test amounts.
First the yellow phosphorus furnace slag of drying is ground to form powdery; Again Yellow phosphorus furnace ground-slag and granular yellow phosphorus furnace slag and calcium lime powder and phosphogypsum are carried out even batching in proportion; Add water again and be uniformly mixed, control its water content 10%; Brick press is utilized to make adobe body; Finished product is obtained by the maintenance of 1.55MPa saturation steam.
Finished product detection result:
Ultimate compression strength: 53.9MPa;
Folding strength: 9.2MPa;
Fastness to rubbing: 1.3;
Water-intake rate: 9.7%.
Embodiment 4
Take raw material, the mass percent of described raw material is: Yellow phosphorus furnace ground-slag 30%; Granular yellow phosphorus furnace slag 55%; Calcium lime powder 5%; Phosphogypsum 10%.Yellow phosphorus furnace slag is Water Quenching Slag, its P 2o 5content≤4.5%.The fineness of Yellow phosphorus furnace ground-slag is 200 orders, sieving rate >=90%.The fineness of granular yellow phosphorus furnace slag is 1.0.Effective CaO content >=50% of calcium lime powder, fineness is 200 orders, sieving rate >=75%.P in phosphogypsum 2o 5content≤3.5%, water content is 10%.Method for making is as follows:
(1) yellow phosphorus furnace slag of drying is ground to form powder, obtain Yellow phosphorus furnace ground-slag;
(2) Yellow phosphorus furnace ground-slag step (1) obtained and granular yellow phosphorus furnace slag and calcium lime powder and phosphogypsum are prepared burden by mass percentage, obtain mixed dry material;
(3), after being added water by the mixed dry material that step (2) obtains and being uniformly mixed, the mixture that water content is 9% is obtained;
(4) utilize brick press that step (3) is obtained mixture and make adobe body;
(5) finished product is obtained by the maintenance of 1.65MPa saturation steam.
Embodiment 5
Take raw material, the mass percent of described raw material is: Yellow phosphorus furnace ground-slag 60%; Granular yellow phosphorus furnace slag 20%; Calcium lime powder 0.5%; Phosphogypsum 19.5%.Yellow phosphorus furnace slag is Water Quenching Slag, its P 2o 5content≤4.5%.The fineness of Yellow phosphorus furnace ground-slag is 200 orders, sieving rate >=90%.The fineness of granular yellow phosphorus furnace slag is at 2.0mm.Effective CaO content >=50% of calcium lime powder, fineness is 200 orders, sieving rate >=75%.P in phosphogypsum 2o 5content≤3.5%, water content is 11%.Method for making is as follows:
(1) yellow phosphorus furnace slag of drying is ground to form powder, obtain Yellow phosphorus furnace ground-slag;
(2) Yellow phosphorus furnace ground-slag step (1) obtained and granular yellow phosphorus furnace slag and calcium lime powder and phosphogypsum are prepared burden by mass percentage, obtain mixed dry material;
(3), after being added water by the mixed dry material that step (2) obtains and being uniformly mixed, the mixture that water content is 8% is obtained;
(4) utilize brick press that step (3) is obtained mixture and make adobe body;
(5) finished product is obtained by the maintenance of 1.60MPa saturation steam.
Embodiment 6
Take raw material, the mass percent of described raw material is: Yellow phosphorus furnace ground-slag 60%; Granular yellow phosphorus furnace slag 30%; Calcium lime powder 5%; Phosphogypsum 5%.Yellow phosphorus furnace slag is Water Quenching Slag, its P 2o 5content≤4.5%.The fineness of Yellow phosphorus furnace ground-slag is 200 orders, sieving rate >=90%.The fineness of granular yellow phosphorus furnace slag is at 3.0mm.Effective CaO content >=50% of calcium lime powder, fineness is 200 orders, sieving rate >=75%.P in phosphogypsum 2o 5content≤3.5%, water content is 12%.Method for making is as follows:
(1) yellow phosphorus furnace slag of drying is ground to form powder, obtain Yellow phosphorus furnace ground-slag;
(2) Yellow phosphorus furnace ground-slag step (1) obtained and granular yellow phosphorus furnace slag and calcium lime powder and phosphogypsum are prepared burden by mass percentage, obtain mixed dry material;
(3), after being added water by the mixed dry material that step (2) obtains and being uniformly mixed, the mixture that water content is 7% is obtained;
(4) utilize brick press that step (3) is obtained mixture and make adobe body;
(5) finished product is obtained by the maintenance of 1.55MPa saturation steam.
Embodiment 7
Take raw material, the mass percent of described raw material is: Yellow phosphorus furnace ground-slag 40%; Granular yellow phosphorus furnace slag 45%; Calcium lime powder 2%; Phosphogypsum 13%.Yellow phosphorus furnace slag is Water Quenching Slag, its P 2o 5content≤4.5%.The fineness of Yellow phosphorus furnace ground-slag is 200 orders, sieving rate >=90%.The fineness of granular yellow phosphorus furnace slag is at 4.0mm.Effective CaO content >=50% of calcium lime powder, fineness is 200 orders, sieving rate >=75%.P in phosphogypsum 2o 5content≤3.5%, water content is 10.5%.Method for making is as follows:
(1) yellow phosphorus furnace slag of drying is ground to form powder, obtain Yellow phosphorus furnace ground-slag;
(2) Yellow phosphorus furnace ground-slag step (1) obtained and granular yellow phosphorus furnace slag and calcium lime powder and phosphogypsum are prepared burden by mass percentage, obtain mixed dry material;
(3), after being added water by the mixed dry material that step (2) obtains and being uniformly mixed, the mixture that water content is 10% is obtained;
(4) utilize brick press that step (3) is obtained mixture and make adobe body;
(5) finished product is obtained by the maintenance of 1.60MPa saturation steam.
Embodiment 8
Take raw material, the mass percent of described raw material is: Yellow phosphorus furnace ground-slag 50%; Granular yellow phosphorus furnace slag 30%; Calcium lime powder 5%; Phosphogypsum 15%.Yellow phosphorus furnace slag is Water Quenching Slag, its P 2o 5content≤4.5%.The fineness of Yellow phosphorus furnace ground-slag is 200 orders, sieving rate >=90%.The fineness of granular yellow phosphorus furnace slag is at 5.0mm.Effective CaO content >=50% of calcium lime powder, fineness is 200 orders, sieving rate >=75%.P in phosphogypsum 2o 5content≤3.5%, water content is 11.5%.Method for making is as follows:
(1) yellow phosphorus furnace slag of drying is ground to form powder, obtain Yellow phosphorus furnace ground-slag;
(2) Yellow phosphorus furnace ground-slag step (1) obtained and granular yellow phosphorus furnace slag and calcium lime powder and phosphogypsum are prepared burden by mass percentage, obtain mixed dry material;
(3), after being added water by the mixed dry material that step (2) obtains and being uniformly mixed, the mixture that water content is 8% is obtained;
(4) utilize brick press that step (3) is obtained mixture and make adobe body;
(5) finished product is obtained by the maintenance of 1.55MPa saturation steam.
Embodiment 9
Take raw material, the mass percent of described raw material is: Yellow phosphorus furnace ground-slag 40%; Granular yellow phosphorus furnace slag 45%; Calcium lime powder 5%; Phosphogypsum 10%.Yellow phosphorus furnace slag is Water Quenching Slag, its P 2o 5content≤4.5%.The fineness of Yellow phosphorus furnace ground-slag is 200 orders, sieving rate >=90%.The fineness of granular yellow phosphorus furnace slag is at 3.0mm.Effective CaO content >=50% of calcium lime powder, fineness is 200 orders, sieving rate >=75%.P in phosphogypsum 2o 5content≤3.5%, water content is 10%.Method for making is as follows:
(1) yellow phosphorus furnace slag of drying is ground to form powder, obtain Yellow phosphorus furnace ground-slag;
(2) Yellow phosphorus furnace ground-slag step (1) obtained and granular yellow phosphorus furnace slag and calcium lime powder and phosphogypsum are prepared burden by mass percentage, obtain mixed dry material;
(3), after being added water by the mixed dry material that step (2) obtains and being uniformly mixed, the mixture that water content is 9% is obtained;
(4) utilize brick press that step (3) is obtained mixture and make adobe body;
(5) finished product is obtained by the maintenance of 1.60MPa saturation steam.
Embodiment 10
Take raw material, the mass percent of described raw material is: Yellow phosphorus furnace ground-slag 45%; Granular yellow phosphorus furnace slag 40%; Calcium lime powder 3%; Phosphogypsum 12%.Yellow phosphorus furnace slag is Water Quenching Slag, its P 2o 5content≤4.5%.The fineness of Yellow phosphorus furnace ground-slag is 200 orders, sieving rate >=90%.The fineness of granular yellow phosphorus furnace slag is at 2.0mm.Effective CaO content >=50% of calcium lime powder, fineness is 200 orders, sieving rate >=75%.P in phosphogypsum 2o 5content≤3.5%, water content is 12%.Method for making is as follows:
(1) yellow phosphorus furnace slag of drying is ground to form powder, obtain Yellow phosphorus furnace ground-slag;
(2) Yellow phosphorus furnace ground-slag step (1) obtained and granular yellow phosphorus furnace slag and calcium lime powder and phosphogypsum are prepared burden by mass percentage, obtain mixed dry material;
(3), after being added water by the mixed dry material that step (2) obtains and being uniformly mixed, the mixture that water content is 10% is obtained;
(4) utilize brick press that step (3) is obtained mixture and make adobe body;
(5) finished product is obtained by the maintenance of 1.55MPa saturation steam.
Randomly draw the made steam pressure yellow phosphorus furnace slag pavior brick of embodiment 1,2,3 as sample, detect respectively.The inspection of ultimate compression strength, folding strength, tests by the regulation of building material industry standard JC466 " appendix A " and " Appendix B " (refilling member) respectively.Cut resistance test is carried out according to the regulation of GB/T12988 " inorganic earth material cut resistance test method ".The moisture content test, the equipment specified according to JC446 standard, test specimen quantity, testing sequence and result calculating etc. require to carry out.Detected result is as shown in table 1.
The detected result of table 1 steam pressure yellow phosphorus furnace slag of the present invention pavior brick

Claims (3)

1. a steam pressure yellow phosphorus furnace slag pavior brick, is characterized in that: be made up of yellow phosphorus furnace slag powder or granule yellow phosphorus furnace slag, calcium lime powder, phosphogypsum, and the mass percent of described raw material is:
Yellow phosphorus furnace ground-slag 30% ~ 60%;
Granular yellow phosphorus furnace slag 20% ~ 55%;
Calcium lime powder 0.5% ~ 5%;
Phosphogypsum 5% ~ 20%;
Described yellow phosphorus furnace slag is Water Quenching Slag, its P 2o 5content≤4.5%;
The fineness of described Yellow phosphorus furnace ground-slag is 200 orders, sieving rate >=90%;
The fineness of described granular yellow phosphorus furnace slag is at 1.0 ~ 5.0mm;
Effective CaO content >=50% of described calcium lime powder, fineness is 200 orders, sieving rate >=75%;
P in described phosphogypsum 2o 5content≤3.5%, water content is 10 ~ 12%;
The making method of described steam pressure yellow phosphorus furnace slag pavior brick: be made up in accordance with the following methods of described yellow phosphorus furnace slag powder or granule yellow phosphorus furnace slag, calcium lime powder, phosphogypsum:
(1) yellow phosphorus furnace slag of drying is ground to form powder, obtain Yellow phosphorus furnace ground-slag;
(2) Yellow phosphorus furnace ground-slag step (1) obtained and granular yellow phosphorus furnace slag and calcium lime powder and phosphogypsum are prepared burden by mass percentage, obtain mixed dry material;
(3), after being added water by the mixed dry material that step (2) obtains and being uniformly mixed, the mixture that water content is 7% ~ 10% is obtained;
(4) utilize brick press that step (3) is obtained mixture and make adobe body;
(5) finished product is obtained by the maintenance of 1.55 ~ 1.65MPa saturation steam.
2. a kind of steam pressure yellow phosphorus furnace slag pavior brick according to claim 1, is characterized in that: the mass percent of described raw material is:
Yellow phosphorus furnace ground-slag 40% ~ 50%;
Granular yellow phosphorus furnace slag 30% ~ 45%;
Calcium lime powder 2% ~ 5%;
Phosphogypsum 10% ~ 15%.
3. a kind of steam pressure yellow phosphorus furnace slag pavior brick according to claim 1, is characterized in that: the mass percent of described raw material is:
Yellow phosphorus furnace ground-slag 45%;
Granular yellow phosphorus furnace slag 40%;
Calcium lime powder 3%;
Phosphogypsum 12%.
CN201310533643.8A 2013-11-01 2013-11-01 Autoclaved yellow phosphorus slag pavement brick and making method thereof Active CN103626462B (en)

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