CN104402372A - Tailing aerated concrete block and preparation method thereof - Google Patents
Tailing aerated concrete block and preparation method thereof Download PDFInfo
- Publication number
- CN104402372A CN104402372A CN201410530914.9A CN201410530914A CN104402372A CN 104402372 A CN104402372 A CN 104402372A CN 201410530914 A CN201410530914 A CN 201410530914A CN 104402372 A CN104402372 A CN 104402372A
- Authority
- CN
- China
- Prior art keywords
- building block
- lime
- temperature
- concrete building
- entrained concrete
- 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
Links
Classifications
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to the technical field of concrete blocks and especially provides a tailing aerated concrete block and a preparation method thereof. In the tailing aerated concrete block, through control and adjustment of proportions among fluorite tailings, lime, cement, gypsum, aluminum powder, with combination of control of physical and chemical parameters in treatment on the raw materials, with combination of sequence in raw material mixing and with combination of control of a mixing temperature, a stirring speed and a stirring time, the lime can be directly and directionally subjected to a digestion process and a water material ratio can be controlled so that a raw material mixture is moderate in thickness, is easy to cut, is free of mould collapse and is easy and uniform in gas generation, by which a manufactured product is not liable to crack and the aerated concrete block is improved in quality. Furthermore, a thermal insulating effect and a sound insulating effect of the aerated concrete block are enhanced.
Description
Technical field
The present invention relates to concrete segment technical field, especially a kind of tailings air-entrained concrete building block and preparation method thereof.
Background technology
Autoclave aerated concrete building block or concrete or brick, all a kind of novel energy-conserving wall heat insulation materials, at present in most of regional Jun You manufacturing enterprise of China, especially in southwest, its raw material is after mainly flyash and other chemical spent materials and cement, lime etc. carry out being hybridly prepared into slurries, then obtain in conjunction with techniques such as slurrying, casting, maintenances; ; in some areas because flyash lacks or fly ash is in short supply, lack natural silica Sand resource in addition, cause the performance of the related productss such as the steam-pressing aero-concrete made to can not get ensureing; even be difficult to proceed normal production, and then hinder the development of this industry.
And fluorite mine tailing is a kind of high-silicon type trade waste, the content comparatively horn of plenty of element silicon wherein, it is in silicon-dioxide, content reaches more than 91%, and this trade waste not only can bring the pollution of environment, also make a large amount of natural resourcess can not get second stage employ and be wasted, and then the cost caused in industrial sector is larger.
Simultaneously, quality is light, good heat insulating because it has for steam-pressing aero-concrete series product, sound-absorbing effect is good, and there is certain intensity and the advantage such as can to process, filling and the lagging material of building enclosure are widely used in, obtain at building field and pay attention to widely, become the preferred material of construction that many countries widely popularize and develop.
At present, China has become big country prepared by this New Building Materials, but due to the shortage of raw material, and the control of other processing parameters is inadequate, make the quality of gas concrete series product also be difficult to be protected, for this reason, this investigator personnel are by long-term Exploration & stu dy, and combine actual experimental conditions, for fluorite mine tailing is used for providing in technique prepared by gas concrete series product a kind of newly to select.
Summary of the invention
In order to solve the above-mentioned technical problem existed in prior art, the invention provides a kind of tailings air-entrained concrete building block and preparation method thereof.
Be achieved particular by following technical scheme:
A kind of tailings air-entrained concrete building block, its material composition take parts by weight as fluorite mine tailing 70-74 part, lime 17-18 part, cement 4.1-10 part, gypsum 4.2-5.1 part, aluminium powder 0.05-0.1 part.
Described material composition take parts by weight as fluorite mine tailing 71-73 part, lime 17.2-17.7 part, cement 5-7 part, gypsum 4.5-4.7 part, aluminium powder 0.06-0.09 part.
Described material composition take parts by weight as fluorite mine tailing 72 parts, 17.5 parts, lime, cement 6 parts, 4.6 parts, gypsum, aluminium powder 0.08 part.
Described fluorite mine tailing is the powder of granularity≤0.08mm, and to tail over be 10% ~ 20%, specific surface area 2800cm
2/ g ~ 3300cm
2/ g.
Described lime is unslaked lime, and its fineness is 0.08mm, screen over-size≤10.5%.
The preparation method of this air-entrained concrete building block, comprises the following steps:
(1) Feedstock treating mixing: get raw material by proportioning, gypsum is carried out desulfurization process, and then to obtain containing the amount of sulphur trioxide be desulfurated plaster after 44.8%; Fluorite mine tailing is placed in pulverizer and carries out powder, grind into the powder of granularity≤0.08mm, and to tail over be 10% ~ 20%, specific surface area 2800cm
2/ g ~ 3300cm
2/ g, stand-by; Again under normal temperature environment, desulfurated plaster is mixed with fluorite mine tailing, and employing stirring speed is 100-120r/min stir process 1-2h, and temperature is controlled at 30-40 DEG C, add lime wherein again, and Keep agitation speed stirs 1.5min, in this stage, temperature is warming up to 60-70 DEG C at 10-20s, after leaving standstill process 30-40min, add aluminium powder wherein again, and add fashionable, at 5-10s by temperature to 200-300 DEG C, adjustment stirring velocity be 70-90r/min stir process 30-50s; Again at a constant temperature, after maintaining stirring velocity, add cement wherein, after treating that cement has added, then after continuing stir process 30-40min, leave standstill 10-20min and obtain compound, stand-by;
(2) slurrying: get step 1) compound that obtains is placed in stirring pulping machine, and the proportioning being 0.465-0.485 according to ratio of water to material adds water, and to adjust stirring velocity be 100-200r/min stir process 10-15min, and control temperature is 30-40 DEG C; Adjusting stirring velocity is again 70-90r/min, constant temperature stir process 1-3h, obtains cast slurries;
(3) injection molding: by step 2) the cast slurries that obtain carry out denseness adjustment, make the denseness of slurries at 200-240mm, and to adopt the mode passing into steam to adjust temperature in mould be after 40-48 DEG C, then in mould, pour into a mould slurries, after casting complete; Continue to pass into steam, and to adjust vapor temperature be after 44-46 DEG C, quiet stopping processes 70-120min, until quiet stop terminating after, by its demoulding process, obtain just finished product;
(4) cut: adopt cutting machine to cut into building block first finished product, air-entrained concrete building block work in-process can be obtained;
(5) maintenance: again air-entrained concrete building block work in-process are placed in curing autoclave, first pass into steam wherein, control temperature is 35-40 DEG C and carries out precuring 20-30min, again at 1.5h by temperature to 180-190 DEG C, and to adjust vapor pressure be under 1.1-1.3MPa, after constant temperature and pressure maintenance 7-8.5h; Again at 2h by under greenhouse cooling to normal temperature environment, go out still, finished product air-entrained concrete building block can be obtained.
Described steam is water vapour.
Described Feedstock treating mixing can also be after first being mixed with gypsum by fluorite mine tailing, then after the obtained magma that added water, then by magma injection molding, and when injection molding, add cement, lime, aluminium powder successively.
Described Feedstock treating mixing can also be after first being mixed with gypsum by fluorite mine tailing, then after the obtained magma that added water, then add cement, lime, aluminium powder successively wherein, and after stirring, obtain slip.
Fluorite mine tailing is a kind of processing of fluorspar ores mine tailing, and its chemical composition is in table 1, and main component is silicon-dioxide 91.38%, and other compositions are less.The impurity such as mineral composition forms primarily of quartz, the oxide compound containing a small amount of iron.The fluorite mine tailing that the present invention uses is the self-produced processing of fluorspar ores tailings in Ecological effect, particle diameter at below 1mm, as the raw material of the present invention's experiment; Therefore, utilize fluorite mine tailing to research and produce comprehensive utilization of resources approach that gas concrete is a kind of high added value.
Table 1
By fluorite mine tailing after levigate, fineness is: 0.08mm square hole sieve screen over-size is 12.5%, and levigate rear color is slightly aobvious faint yellow.
What unslaked lime adopted is that middling speed clears up lime, and unslaked lime essential property is in table 2.
Table 2
What desulfurated plaster adopted is the desulfurated plaster of enterprise of power plant, and SO3 content is 44.8%.
What cement adopted is PO42.5 class g cement, 28 days ultimate compression strength 48.9MPa.
The present invention produces SiO2 content >=65% in the silica sand of sand aerated concrete requirement according to JC/T622-2009 " silicate building products sand ", and the gas concrete density rating of design is B06 level, and strength grade is A3.5.And then research and discovery is carried out to the proportioning of preparation of raw material, experimental design is become following several groups of experiments, and its concrete proportioning result is as shown in table 3:
Table 3
As can be seen from Table 3, X-1, X-2, X-4, X-5 tetra-the assembly composition and division in a proportion sample that tries to allot can meet the technical requirements of intensity and density in GB11968-2006 " autoclave aerated concrete building block ", but X-2, X-3 reach 7% mainly due to gypsum addition, divergence 285mm, gypsum is excessive affects lime slaking, setting rate afterwards, thus reduce the void content of getting angry, cause intensity lower slightly, dry density lays particular stress on; Divergence is mainly derived from ratio of water to material, and along with divergence increases, dry density also increases; Along with fluorite mine tailing volume increases, intensity increases thereupon, and dry density is irregular growth.Totally can find out, gypsum content should control about 5%.
In the production practice of gas concrete, need accurately to control, as temperature, time, ratio of water to material (or denseness) etc. relevant processing parameter.If these control indexes are bad, can occur that goods can not cut, the mould that collapses, can not get angry, feel suffocated, the multiple phenomenon such as uneven, the goods cracking of getting angry.
During as poured into a mould in ratio of water to material and gas concrete, the mass ratio of water and butt material in slip, is the important factor affecting goods, therefore needs to strengthen to the adjustment of ratio of water to material and accurately controls.
Gas concrete fluorite mine tailing need after independent ball milling with gypsum mixed pulp, therefore need in the process for magma processed to control water, generally calculate by proportion, the magma proportion of powder ash air-entrained concrete is between 1.50 ~ 1.65, but the density of fluorite mine tailing is between 2.1 ~ 2.4, this density than flyash is high a lot, therefore specific gravity control is needed to recalculate and test, this test-results can not blocking pipe according to the magma being this kind of proportion in actual production, mobility is better, and fluorite mine tailing is main magma proportion is 0.48;
In the slip casting stage, need accurately to control ratio of water to material, at this moment can not calculate by proportion, have very large error, therefore adopt denseness to control.The testing method of denseness is: internal diameter is 50mm, the surface of high 100mm and the steel cylinder of inner wall smooth, pad the smooth plate of one piece of level below, slip is poured in cylinder, at the uniform velocity upwards cylinder is lifted in 5S, measure the diameter of the mutually perpendicular direction of the slip collapsed, both mean values are considered as its denseness.The denseness of general flyash controls at 140 ~ 190mm.And the denseness of slip has relation with the graininess of raw material, water consumption, therefore pass through a large amount of tests, can find out that the slip denseness of fluorite mine tailing gas concrete should control at 200 ~ 240mm, easily to collapse mould more than 240mm, to get angry difficulty lower than 200mm.
For another example slip teeming temperature, quietly stop curing temperature, precuring temperature, steam press maintenance temperature are all extremely important, the deviation in several years is had to adjust in time a little, otherwise the difficulty that can cause getting angry, get angry uneven, feel suffocated, quietly stop that curing time increases, cutting difficulty, reverse mould, the phenomenons such as mould of collapsing, seriously can cause the serious quality problems etc. of the underproduction, goods.
So, the present invention by a large amount of experiments with probe into after, the teeming temperature of slip controlled at 40 ~ 48 DEG C, quiet curing temperature of stopping controls at about 45 DEG C; Precuring temperature controls between 35 ~ 40 DEG C; Steam press maintenance temperature should between 180 ~ 190 DEG C.And according to the test result analysis that the present invention tests, lime is middling speed lime (digestion time 24min), the churning time therefore after test input lime of the present invention is 1.5min.
Aluminium powder, generally after abundant degreasing (add water at a high speed stir into aluminium paste 30S), to add in slip mix and blend time controling at about 30-50S.
The quiet time stopping maintenance generally depends on the basicity situation of the fineness of indoor temperature, lime, digestion time, speed and slip, when temperature 43 DEG C, middling speed lime can complete at 30 ~ 45min and get angry, but sclerosis needs just can realize after 40 ~ 60min, that is the quiet total time stopping maintenance stage needs is 70 ~ 120min.
Steam press maintenance time general control 8 ~ 12h, wherein heats up and temperature-fall period needs 1.5h and 2.0h respectively, and needs 7 ~ 8.5h in high-pressure curing (vapor pressure 1.2MPa the is referred to as 12 kilograms of pressure usually) stage.
Its divergence of the air-entrained concrete building block prepared by above-mentioned experimentation is better, ultimate compression strength is higher, dry density is more excellent, the technical requirements of intensity and density in GB11968-2006 " autoclave aerated concrete building block " can be met completely, even more excellent than it, and it is more to solve current mine tailing fertilizer, the technical problem that contaminate environment is serious, also solve the technical problem of technological deficiency that waste residue exists for building materials field and building materials field rareness simultaneously, facilitate the development of gas concrete series product industry, there is significant economy and the value of environmental protection.
Compared with prior art, technique effect of the present invention is embodied in:
1. pass through fluorite mine tailing, lime, cement, gypsum, the proportioning of aluminium powder is carried out controlling and is adjusted, and the physical and chemical parameter combined it processes controls, and in conjunction with the order that each raw material mixes, and temperature during mixing, the control of stirring velocity and churning time, make lime accurately directedly can carry out digestion process, and ratio of water to material is controlled, denseness is used, easily cut, mould can not be stepped on, it gets angry easily, and evenly get angry, make the product of making not easy to crack, improve the quality of air-entrained concrete building block, further improve the insulation of air-entrained concrete building block, soundproof effect.
2. the present invention is by instead of the flyash of traditional gas concrete series product by fluorite mine tailing, and then by trade waste extension application, reduce the quantity discharged of waste, also enriched the raw material sources of gas concrete series product, there is significant economic benefit and the value of environmental protection.
Embodiment
Below in conjunction with concrete embodiment, further restriction is done to technical scheme of the present invention, but claimed scope is not only confined to done description.
Embodiment 1
A kind of tailings air-entrained concrete building block, its material composition is fluorite mine tailing 70kg, lime 17kg, cement 4.1kg, gypsum 4.2kg, aluminium powder 0.05kg.
Described fluorite mine tailing is the powder of 0.08mm, and it is 10% that this powder tails over, its specific surface area 2800cm
2/ g.
Described lime is unslaked lime, and its fineness is 0.08mm, screen over-size≤10.5%.
The preparation method of this air-entrained concrete building block, comprises the following steps:
(1) Feedstock treating mixing: get raw material by proportioning, gypsum is carried out desulfurization process, and then to obtain containing the amount of sulphur trioxide be desulfurated plaster after 44.8%; Fluorite mine tailing is placed in pulverizer and carries out powder, grind into the powder of 0.08mm, it is 10% that this powder tails over, its specific surface area 2800cm
2/ g, stand-by; Again under normal temperature environment, desulfurated plaster is mixed with fluorite mine tailing, and employing stirring speed is 100r/min stir process 1h, and temperature is controlled at 30 DEG C, add lime wherein again, and Keep agitation speed stirs 1.5min, in this stage, temperature is warming up to 60 DEG C at 10s, after leaving standstill process 30min, add aluminium powder wherein again, and add fashionable, at 5s by temperature to 200 DEG C, adjustment stirring velocity be 70r/min stir process 30s; Again at a constant temperature, after maintaining stirring velocity, add cement wherein, after treating that cement has added, then after continuing stir process 30min, leave standstill 10min and obtain compound, stand-by;
(2) slurrying: get step 1) compound that obtains is placed in stirring pulping machine, and the proportioning being 0.465 according to ratio of water to material adds water, and to adjust stirring velocity be 100r/min stir process 10min, and control temperature is 30 DEG C; Adjusting stirring velocity is again 70r/min, constant temperature stir process 1h, obtains cast slurries;
(3) injection molding: by step 2) the cast slurries that obtain carry out denseness adjustment, make the denseness of slurries at 200mm, and to adopt the mode passing into steam to adjust temperature in mould be after 40 DEG C, then in mould, pour into a mould slurries, after casting complete; Continue to pass into steam, and to adjust vapor temperature be after 44 DEG C, quiet stopping processes 70min, until quiet stop terminating after, by its demoulding process, obtain just finished product;
(4) cut: adopt cutting machine to cut into building block first finished product, air-entrained concrete building block work in-process can be obtained;
(5) maintenance: again air-entrained concrete building block work in-process are placed in curing autoclave, first pass into steam wherein, control temperature is 35 DEG C and carries out precuring 20min, then at 1.5h by temperature to 180 DEG C, and to adjust vapor pressure be under 1.1MPa, after constant temperature and pressure maintenance 7h; Again at 2h by under greenhouse cooling to normal temperature environment, go out still, finished product air-entrained concrete building block can be obtained.
Described steam is water vapour.
Embodiment 2
A kind of tailings air-entrained concrete building block, its material composition (weight part) is fluorite mine tailing 74kg, lime 18kg, cement 10kg, gypsum 5.1kg, aluminium powder 0.1kg.
Described fluorite mine tailing is the powder of 0.07mm, and it is 20% that this powder tails over, its specific surface area 3300cm
2/ g.
Described lime is unslaked lime, and its fineness is 0.08mm, screen over-size≤10.5%.
The preparation method of this air-entrained concrete building block, comprises the following steps:
(1) Feedstock treating mixing: get raw material by proportioning, gypsum is carried out desulfurization process, and then to obtain containing the amount of sulphur trioxide be desulfurated plaster after 44.8%; Fluorite mine tailing is placed in pulverizer and carries out powder, grind into the powder of 0.07mm, it is 20% that this powder tails over, its specific surface area 3300cm
2/ g, stand-by; Again under normal temperature environment, desulfurated plaster is mixed with fluorite mine tailing, and employing stirring speed is 120r/min stir process 2h, and temperature is controlled at 40 DEG C, add lime wherein again, and Keep agitation speed stirs 1.5min, in this stage, temperature is warming up to 70 DEG C at 20s, after leaving standstill process 40min, add aluminium powder wherein again, and add fashionable, at 10s by temperature to 300 DEG C, adjustment stirring velocity be 90r/min stir process 50s; Again at a constant temperature, after maintaining stirring velocity, add cement wherein, after treating that cement has added, then after continuing stir process 40min, leave standstill 20min and obtain compound, stand-by;
(2) slurrying: get step 1) compound that obtains is placed in stirring pulping machine, and the proportioning being 0.485 according to ratio of water to material adds water, and to adjust stirring velocity be 200r/min stir process 15min, and control temperature is 40 DEG C; Adjusting stirring velocity is again 90r/min, constant temperature stir process 3h, obtains cast slurries;
(3) injection molding: by step 2) the cast slurries that obtain carry out denseness adjustment, make the denseness of slurries at 240mm, and to adopt the mode passing into steam to adjust temperature in mould be after 48 DEG C, then in mould, pour into a mould slurries, after casting complete; Continue to pass into steam, and to adjust vapor temperature be after 46 DEG C, quiet stopping processes 120min, until quiet stop terminating after, by its demoulding process, obtain just finished product;
(4) cut: adopt cutting machine to cut into building block first finished product, air-entrained concrete building block work in-process can be obtained;
(5) maintenance: again air-entrained concrete building block work in-process are placed in curing autoclave, first pass into steam wherein, control temperature is 40 DEG C and carries out precuring 30min, then at 1.5h by temperature to 190 DEG C, and to adjust vapor pressure be under 1.3MPa, after constant temperature and pressure maintenance 8.5h; Again at 2h by under greenhouse cooling to normal temperature environment, go out still, finished product air-entrained concrete building block can be obtained.
Described steam is water vapour.
Embodiment 3
A kind of tailings air-entrained concrete building block, its material composition is fluorite mine tailing 72kg, lime 17.5kg, cement 6kg, gypsum 4.6kg, aluminium powder 0.08kg.
Described fluorite mine tailing is the powder of 0.08mm, and it is 15% that this powder tails over, its specific surface area 3000cm
2/ g.
Described lime is unslaked lime, and its fineness is 0.08mm, screen over-size≤10.5%.
The preparation method of this air-entrained concrete building block, comprises the following steps:
(1) Feedstock treating mixing: get raw material by proportioning, gypsum is carried out desulfurization process, and then to obtain containing the amount of sulphur trioxide be desulfurated plaster after 44.8%; Fluorite mine tailing is placed in pulverizer and carries out powder, grind into the powder of 0.075mm, it is 15% that this powder tails over, its specific surface area 3000cm
2/ g, stand-by; Again under normal temperature environment, desulfurated plaster is mixed with fluorite mine tailing, and employing stirring speed is 110r/min stir process 1.5h, and temperature is controlled at 35 DEG C, add lime wherein again, and Keep agitation speed stirs 1.5min, in this stage, temperature is warming up to 65 DEG C at 15s, after leaving standstill process 35min, add aluminium powder wherein again, and add fashionable, at 8s by temperature to 250 DEG C, adjustment stirring velocity be 80r/min stir process 40s; Again at a constant temperature, after maintaining stirring velocity, add cement wherein, after treating that cement has added, then after continuing stir process 35min, leave standstill 15min and obtain compound, stand-by;
(2) slurrying: get step 1) compound that obtains is placed in stirring pulping machine, and the proportioning being 0.47 according to ratio of water to material adds water, and to adjust stirring velocity be 150r/min stir process 13min, and control temperature is 35 DEG C; Adjusting stirring velocity is again 80r/min, constant temperature stir process 2h, obtains cast slurries;
(3) injection molding: by step 2) the cast slurries that obtain carry out denseness adjustment, make the denseness of slurries at 230mm, and to adopt the mode passing into steam to adjust temperature in mould be after 47 DEG C, then in mould, pour into a mould slurries, after casting complete; Continue to pass into steam, and to adjust vapor temperature be after 45 DEG C, quiet stopping processes 100min, until quiet stop terminating after, by its demoulding process, obtain just finished product;
(4) cut: adopt cutting machine to cut into building block first finished product, air-entrained concrete building block work in-process can be obtained;
(5) maintenance: again air-entrained concrete building block work in-process are placed in curing autoclave, first pass into steam wherein, control temperature is 39 DEG C and carries out precuring 25min, then at 1.5h by temperature to 185 DEG C, and to adjust vapor pressure be under 1.2MPa, after constant temperature and pressure maintenance 8h; Again at 2h by under greenhouse cooling to normal temperature environment, go out still, finished product air-entrained concrete building block can be obtained.
Steam is water vapour.
Embodiment 4
On the basis of embodiment 1, other steps are with embodiment 1, and a kind of tailings air-entrained concrete building block, its material composition is fluorite mine tailing 71kg, lime 17.2kg, cement 5kg, gypsum 4.5kg, aluminium powder 0.06kg.
Embodiment 5
On the basis of embodiment 2, other steps are with embodiment 2, and a kind of tailings air-entrained concrete building block, its material composition is fluorite mine tailing 73kg, lime 17.7kg, cement 7kg, gypsum 4.7kg, aluminium powder 0.09kg.
Embodiment 6
On the basis of embodiment 1, other steps and parameter are with embodiment 1, and a kind of tailings air-entrained concrete building block, its material composition is fluorite mine tailing 74%, lime 17.2%, cement 4.1%, gypsum 4.7%, aluminium powder 0.08%.And adopted, after first fluorite mine tailing being mixed with gypsum, then the preparation that adds water wherein, make ratio of water to material be 0.48, and stir process, add cement, stir, obtain magma; Again magma is cast in mould, and steam is passed in mould, and add unslaked lime wherein, and control temperature is after 40-48 DEG C of stirring 1.5min, add aluminium powder wherein again, after stir process 30-50s, then by its quiet stop 70-120min after, it is 43 DEG C that the quiet stopping time passes into automatic steam control temperature wherein, carried out afterwards in the temperature environment of 180-190 DEG C, 1.2MPa, steam press maintenance 8-12h, can obtain air-entrained concrete building block.
Embodiment 7
On the basis of embodiment 2, other steps and parameter are with embodiment 2, and a kind of tailings air-entrained concrete building block, its material composition is fluorite mine tailing 72%, lime 18.0%, cement 5.8%, gypsum 4.2%, aluminium powder 0.08%.And adopted, after first fluorite mine tailing being mixed with gypsum, then the preparation that adds water wherein, make ratio of water to material be 0.47, and stir process, add cement, stir, obtain magma; Again and add unslaked lime wherein, and control temperature be 40-48 DEG C stir 1.5min after, then add aluminium powder wherein, after stir process 30-50s, then by its injection molding process, and when injection molding, automatic steam control temperature is adopted to be 40-48 DEG C, stir after 1-2h, then by its quiet stop 70-120min after, it is 43 DEG C that the quiet stopping time passes into automatic steam control temperature wherein, carried out afterwards in the temperature environment of 180-190 DEG C, 1.2MPa, steam press maintenance 8-12h, can obtain air-entrained concrete building block.
It is important to point out at this; above embodiment and test example are only limitted to be further elaborated technical scheme of the present invention and illustrate; it is not the further restriction to technical scheme of the present invention; the essential characteristics of the non-protruding that those skilled in the art make on this basis and the progress of non-significant, all belong to protection category of the present invention.
Claims (9)
1. a tailings air-entrained concrete building block, is characterized in that, its material composition, take parts by weight as fluorite mine tailing 70-74 part, lime 17-18 part, cement 4.1-10 part, gypsum 4.2-5.1 part, aluminium powder 0.05-0.1 part.
2. tailings air-entrained concrete building block as claimed in claim 1, it is characterized in that, described material composition, take parts by weight as fluorite mine tailing 71-73 part, lime 17.2-17.7 part, cement 5-7 part, gypsum 4.5-4.7 part, aluminium powder 0.06-0.09 part.
3. tailings air-entrained concrete building block as claimed in claim 1, it is characterized in that, described material composition, take parts by weight as fluorite mine tailing 72 parts, 17.5 parts, lime, cement 6 parts, 4.6 parts, gypsum, aluminium powder 0.08 part.
4. the tailings air-entrained concrete building block as described in claim 1 or 2 or 3, is characterized in that, described fluorite mine tailing is the powder of granularity≤0.08mm, and to tail over be 10% ~ 20%, specific surface area 2800cm
2/ g ~ 3300cm
2/ g.
5. the tailings air-entrained concrete building block as described in claim 1 or 2 or 3, it is characterized in that, described lime is unslaked lime, its fineness is 0.08mm, screen over-size≤10.5%.
6. the preparation method of the tailings air-entrained concrete building block as described in any one of claim 1-5, is characterized in that, comprise the following steps:
(1) Feedstock treating mixing: get raw material by proportioning, by broken for lime, that grinding grinds into granularity≤0.08mm powder, and to tail over be 10% ~ 20%, specific surface area 2800cm
2/ g ~ 3300cm
2/ g, stand-by; Again under normal temperature environment, desulfurated plaster and fluorite mine tailing are carried out mixed pulp, and employing stirring speed is 100-120r/min stir process 1-2h, and temperature is controlled at 30-40 DEG C, add lime wherein again, and Keep agitation speed stirs 1.5min, in this stage, temperature is warming up to 60-70 DEG C at 10-20s, after leaving standstill process 30-40min, add aluminium powder wherein again, and add fashionable, at 5-10s by temperature to 200-300 DEG C, adjustment stirring velocity be 70-90r/min stir process 30-50s; Again at a constant temperature, after maintaining stirring velocity, add cement wherein, after treating that cement has added, then after continuing stir process 30-40min, leave standstill 10-20min and obtain compound, stand-by;
(2) slurrying: get step 1) compound that obtains is placed in stirring pulping machine, and the proportioning being 0.465-0.485 according to ratio of water to material adds water, and to adjust stirring velocity be 100-200r/min stir process 10-15min, and control temperature is 30-40 DEG C; Adjusting stirring velocity is again 70-90r/min, constant temperature stir process 1-3h, obtains cast slurries;
(3) injection molding: by step 2) the cast slurries that obtain carry out denseness adjustment, make the denseness of slurries at 200-240mm, and to adopt the mode passing into steam to adjust temperature in mould be after 40-48 DEG C, then in mould, pour into a mould slurries, after casting complete; Continue to pass into steam, and to adjust vapor temperature be after 44-46 DEG C, quiet stopping processes 70-120min, until quiet stop terminating after, by its demoulding process, obtain just finished product;
(4) cut: adopt cutting machine to cut into building block first finished product, air-entrained concrete building block work in-process can be obtained;
(5) maintenance: again air-entrained concrete building block work in-process are placed in curing autoclave, first pass into steam wherein, control temperature is 35-40 DEG C and carries out precuring 20-30min, again at 1.5h by temperature to 180-190 DEG C, and to adjust vapor pressure be under 1.1-1.3MPa, after constant temperature and pressure maintenance 7-8.5h; Again at 2h by under greenhouse cooling to normal temperature environment, go out still, finished product air-entrained concrete building block can be obtained.
7. the preparation method of tailings air-entrained concrete building block as claimed in claim 6, it is characterized in that, described steam is water vapour.
8. the preparation method of tailings air-entrained concrete building block as claimed in claim 6, it is characterized in that, described Feedstock treating mixing can also be after first being mixed with gypsum by fluorite mine tailing, after the obtained magma that added water again, again by magma injection molding, and when injection molding, add cement, lime, aluminium powder successively.
9. the preparation method of tailings air-entrained concrete building block as claimed in claim 6, it is characterized in that, described Feedstock treating mixing can also be after first being mixed with gypsum by fluorite mine tailing, after the obtained magma that added water again, add cement, lime, aluminium powder successively wherein again, and after stirring, obtain slip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410530914.9A CN104402372A (en) | 2014-10-10 | 2014-10-10 | Tailing aerated concrete block and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410530914.9A CN104402372A (en) | 2014-10-10 | 2014-10-10 | Tailing aerated concrete block and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104402372A true CN104402372A (en) | 2015-03-11 |
Family
ID=52640056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410530914.9A Pending CN104402372A (en) | 2014-10-10 | 2014-10-10 | Tailing aerated concrete block and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104402372A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106365674A (en) * | 2016-09-09 | 2017-02-01 | 安徽工业大学 | Method for preparing aerated concrete block by using slag, tail mud, and desulfurization ashes |
| CN106854902A (en) * | 2016-12-15 | 2017-06-16 | 贵州省建筑材料科学研究设计院有限责任公司 | A kind of quartzy tailings fireproof heated board and preparation method thereof |
| CN108609988A (en) * | 2018-05-22 | 2018-10-02 | 贵州省建筑材料科学研究设计院有限责任公司 | A method of producing air-entrained concrete building block using processing of fluorspar ores waste residue-quartz tailings |
| CN112194444A (en) * | 2020-09-04 | 2021-01-08 | 苏州良浦天路新型建材有限公司 | Sand aerated block and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102976668A (en) * | 2012-09-20 | 2013-03-20 | 浙江武义神龙浮选有限公司 | Method for producing aerated concrete building block by using fluorite tailings |
| CN104016646A (en) * | 2014-05-23 | 2014-09-03 | 安庆市金鹰新型建材科技股份有限公司 | Sand air-entrained concrete building block and production method thereof |
| CN104016701A (en) * | 2014-05-23 | 2014-09-03 | 安庆市金鹰新型建材科技股份有限公司 | Powder ash air-entrained concrete building block and production method thereof |
-
2014
- 2014-10-10 CN CN201410530914.9A patent/CN104402372A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102976668A (en) * | 2012-09-20 | 2013-03-20 | 浙江武义神龙浮选有限公司 | Method for producing aerated concrete building block by using fluorite tailings |
| CN104016646A (en) * | 2014-05-23 | 2014-09-03 | 安庆市金鹰新型建材科技股份有限公司 | Sand air-entrained concrete building block and production method thereof |
| CN104016701A (en) * | 2014-05-23 | 2014-09-03 | 安庆市金鹰新型建材科技股份有限公司 | Powder ash air-entrained concrete building block and production method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106365674A (en) * | 2016-09-09 | 2017-02-01 | 安徽工业大学 | Method for preparing aerated concrete block by using slag, tail mud, and desulfurization ashes |
| CN106854902A (en) * | 2016-12-15 | 2017-06-16 | 贵州省建筑材料科学研究设计院有限责任公司 | A kind of quartzy tailings fireproof heated board and preparation method thereof |
| CN108609988A (en) * | 2018-05-22 | 2018-10-02 | 贵州省建筑材料科学研究设计院有限责任公司 | A method of producing air-entrained concrete building block using processing of fluorspar ores waste residue-quartz tailings |
| CN108609988B (en) * | 2018-05-22 | 2021-01-05 | 贵州省建筑材料科学研究设计院有限责任公司 | Method for producing aerated concrete building block by using fluorite beneficiation waste residue-quartz tailings |
| CN112194444A (en) * | 2020-09-04 | 2021-01-08 | 苏州良浦天路新型建材有限公司 | Sand aerated block and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105541384B (en) | A kind of ultralight foam concrete and preparation method thereof | |
| CN102092976B (en) | Mass eco-concrete expansive agent and preparation method thereof | |
| CN106082904B (en) | A kind of high-precision building block of steam-pressing aero-concrete and preparation method thereof | |
| CN102344265B (en) | Mechanical component mineral casting and mechanical component preparation method using the same | |
| CN104326703A (en) | Method for preparing foamed concrete block from various industrial solid wastes in a compounding manner | |
| CN104386969B (en) | A kind of high-strength high-durability lightweight aggregate concrete and preparation method thereof | |
| CN103172322B (en) | A kind of RPC of mixing super-active slag powder and preparation method thereof | |
| CN106396453B (en) | A kind of modified granite powder as additive and preparation method thereof | |
| CN101845866A (en) | Aerated concrete building block and preparation method thereof | |
| CN107963855A (en) | A kind of super high strength high performance concrete and preparation method thereof | |
| CN104402372A (en) | Tailing aerated concrete block and preparation method thereof | |
| CN103641426A (en) | High strength phosphogypsum brick and manufacturing method thereof | |
| CN107117909A (en) | It is a kind of mixed with RPC of flyash and preparation method thereof | |
| CN109279861A (en) | A kind of self-compaction composite concrete and preparation method thereof, concrete wall brick | |
| CN108341618A (en) | A kind of non-steamed reactive powder concrete admixture and production method | |
| CN108409211B (en) | Dry-mixed mortar and preparation method and application thereof | |
| CN109020451A (en) | A kind of tubular pile cement and preparation method thereof | |
| CN102581922A (en) | Preparation method for aerated concrete building blocks of quartz vein type gold mine tailings | |
| CN108191353A (en) | The lightweight aggregate concrete prepared using discarded clay brick | |
| CN106565117A (en) | High-strength building cement and preparation method thereof | |
| CN102701612B (en) | Manufacturing method of composite phosphorus slag powder | |
| CN109020398A (en) | A kind of colour high performance concrete (RPC) prefabricated components and production method | |
| CN108117340A (en) | A kind of high-strength slab products of haydite and preparation method thereof | |
| CN107311589A (en) | A kind of pressure-resistant antidetonation foam concrete block and preparation method thereof | |
| CN108218359B (en) | A kind of cement base high-performance microdilatancy filling and injecting slurry material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHENFENG HENGSHAN BUILDING MATERIALS LLC Effective date: 20150710 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150710 Address after: 550008 B548 building, Jinyang science and Technology Industrial Park, Guiyang hi tech Zone, Guizhou, China Applicant after: Guizhou industrial solid waste comprehensive utilization (building material) Engineering Technology Research Center Applicant after: ZHENFENG HENGSHAN BUILDING MATERIAL CO., LTD. Address before: 550008 B548 building, Jinyang science and Technology Industrial Park, Guiyang hi tech Zone, Guizhou, China Applicant before: Guizhou industrial solid waste comprehensive utilization (building material) Engineering Technology Research Center |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150311 |