CN106673469B - The curing materials preparation method that is gelled and the method for comprehensively utilizing magnesium chloride tail washings with it - Google Patents
The curing materials preparation method that is gelled and the method for comprehensively utilizing magnesium chloride tail washings with it Download PDFInfo
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- CN106673469B CN106673469B CN201710061832.8A CN201710061832A CN106673469B CN 106673469 B CN106673469 B CN 106673469B CN 201710061832 A CN201710061832 A CN 201710061832A CN 106673469 B CN106673469 B CN 106673469B
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- magnesium chloride
- tail washings
- curing materials
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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
- C04B9/00—Magnesium cements or similar cements
- C04B9/20—Manufacture, e.g. preparing the batches
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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
- C04B9/00—Magnesium cements or similar cements
- C04B9/02—Magnesium cements containing chlorides, e.g. Sorel cement
-
- 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
- C04B9/00—Magnesium cements or similar cements
- C04B9/06—Cements containing metal compounds other than magnesium compounds, e.g. compounds of zinc or lead
Abstract
Method present invention gelling curing materials preparation method and comprehensively utilize magnesium chloride tail washings with it, belong to magnesium chloride tail washings gelling curing technology field, technical problem to be solved is to reduce magnesium chloride tail washings gelling solidification and comprehensive utilization cost, slows down magnesium chloride tail washings disposition pressure；The technical solution of use are as follows: gelling curing materials preparation method: the first step, the preparation of milk of lime precipitating reagent；Second step, mother liquor measure；Third step, stirring sedimentation；4th step is separated by solid-liquid separation；5th step, drying and dewatering；6th step, Grinding manufacturing；To the method for magnesium chloride tail washings comprehensive utilization, the first step measures magnesium chloride and is saturated tail washings, weighs gelling curing materials, and mixing, stirring, grinding are fabricated to net slurry；Sodium chloride tail salt can be taken again, be uniformly mixed, be fabricated to salt slurry；Fine sand can be also taken again, be uniformly mixed, be fabricated to mortar；The present invention can comprehensively utilize magnesium chloride tail washings well.
Description
Technical field
Method present invention gelling curing materials preparation method and comprehensively utilize magnesium chloride tail washings with it, belongs to magnesium chloride tail
Liquid glue cure technical field, be mainly used for goaf filling, shaft and drift supporting material is constructed and building materials manufacture etc. magnesium chlorides tail washings
Gelling solidification when comprehensive utilization.
Background technique
World's potassium resource is abundant, and 90%, the above are marine facies saline deposit mineral deposit, mainly there is sylvite ore and carnallite.Always
The potassium resource of Laos is based on carnallite, sylvite takes second place, and can generate a large amount of chlorine during producing potash fertilizer with carnallite
Change sodium tail salt and magnesium chloride tail washings, wherein sodium chloride tail salt is about 2~3 times of KCL product, and magnesium chloride tail washings is about KCL product
5~7 times.Since there are an about 5 months rainy seasons in Laos every year, sodium chloride tail salt according to the mode of ground stacking at
Reason, rainfall can largely dissolve sodium chloride tail salt and pollution of ecological environment；Magnesium chloride tail washings ground stacking only use tank deposit or
Storehouse is deposited after evaporation saltwater brine generates magnesium sheet, and tank storage is too big, evaporation cost is very high and can generate acid mist.Therefore, it is necessary to pass through synthesis
The approach processing sodium chloride tail salt and magnesium chloride tail washings utilized, or goaf filling is carried out, or construct shaft and drift supporting material, or system
Construction material etc. is made, key link therein is the gelling solidification of magnesium chloride tail washings.The gelling of magnesium chloride tail washings solidifies skill at present
Art is horizontal, and gelling agent mostly uses quick lime (CaO), magnesia (MgO), the calcined calcium oxide of natural dolomite mineral and magnesia
Compared with both mixture, calcium oxide and magnesia, gelling cured body strength when magnesia is applied is high, and pressure-bearing effect is good, mainly
Defect is that Laos's industrial foundation is poor, and locality needs almost without the light-burned powder raw material of magnesia from Chinese import or high-temperature calcination
Dolomite generates, price, at high cost；In terms of the cured body strength that is gelled, intensity requirement when goaf filling is in 0.5~5MPa
The intensity requirement of shaft and drift supporting material is constructed mostly in 5MPa or more in left and right, and intensity requirement when manufacturing building materials is mostly in 10MPa
More than, the gelling curing technology level of magnesium chloride tail washings carries out in-depth study not yet according to different purposes and purpose at present
And refinement.
Summary of the invention
The present invention overcomes magnesium chloride tail washings gelling of the existing technology to solidify, and at high cost, intensity is low, comprehensive utilization range
The deficiencies of limitation, technical problem to be solved are to provide a kind of gelling curing materials preparation method and with its comprehensive utilization chlorination
The method of magnesium tail washings reduces magnesium chloride tail washings gelling solidification and comprehensive utilization cost, slows down magnesium chloride tail washings disposition pressure, realizes
Magnesium chloride tail washings inexpensive, stable, efficient, environmentally protective gelling solidification and comprehensive utilization.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows: gelling curing materials preparation method is pressed
State step progress:
Prepared by the first step, milk of lime precipitating reagent: with water and lime according to the mass ratio of water and calcium oxide for 3~4:1's
Preparing lime milk liquid is formed, blender stirs evenly, after calcium to be oxidized and water fully reacting, as milk of lime precipitating reagent；
Second step, mother liquor measure: measuring magnesium chloride and are saturated mother liquor, measure standard are as follows: lime obtained in the first step
The chlorination magnesium amount that reaction occurs to participate in chemical reaction process for newborn precipitating reagent and magnesium chloride saturation mother liquor accounts for magnesium chloride saturation mother liquor
The 70%~80% of middle whole chlorination magnesium amount；
Third step, stirring sedimentation: by milk of lime precipitating reagent made from the first step, the magnesium chloride for being added to second step measurement is full
In mother liquor, then feed time 5-15min stirs 40-60min with blender, after stirring, is set by sedimentation and thickening
Standby sedimentation 20-40min；
4th step is separated by solid-liquid separation: being separated by solid-liquid separation, is obtained wet to the slurry after reacting in third step using filter plant
Expect solid；
Drying and dewatering: wet feed solid obtained in 4th step is passed through drying equipment, dry removing mother liquor and water by the 5th step
Point；
6th step, Grinding manufacturing: by solid abrasive obtained in the 5th step to≤100 mesh, so far, be gelled curing materials system
It is standby to complete.
In the first step, after calcium to be oxidized and water fully reacting, calcium chloride, the matter of the calcium chloride and calcium oxide is added
The ratio between amount are as follows: 1:2~3.
With the method for gelling curing materials comprehensive utilization magnesium chloride tail washings obtained, sequentially include the following steps:
The first step measures magnesium chloride and is saturated tail washings, contain in big mortar, weigh gelling curing materials, adds in 5-15min
Enter in magnesium chloride saturation tail washings, grinding stirring while adding, magnesium chloride is saturated the mass ratio of tail washings and the curing materials that are gelled are as follows: 1:
0.5-1.5；
Second step, is added water, the quality of the quality sum and water of magnesium chloride saturation tail washings and gelling curing materials it
Than for 1:0-0.15, then stirring, grinding 10-30min, it is fabricated to net slurry；
Third step takes net slurry progress goaf filling obtained in second step, or constructs shaft and drift supporting material.
With another method of gelling curing materials comprehensive utilization magnesium chloride tail washings obtained, sequentially include the following steps:
The first step measures magnesium chloride and is saturated tail washings, contain in big mortar, weigh gelling curing materials, adds in 5-15min
Enter in magnesium chloride saturation tail washings, grinding stirring while adding, magnesium chloride is saturated the mass ratio of tail washings and the curing materials that are gelled are as follows: 1:
0.5-1.5；
Second step, is added water, the quality of the quality sum and water of magnesium chloride saturation tail washings and gelling curing materials it
Than for 1:0-0.15, then stirring, grinding 10-30min, it is fabricated to net slurry；
Third step, takes net slurry obtained in sodium chloride tail salt and second step, the quality of the sodium chloride tail salt and net slurry it
Than are as follows: 1:0.5-1.5, stirring 10-15min are uniformly mixed, and are fabricated to salt slurry；
4th step takes salt slurry obtained in third step, carries out goaf filling, or construct shaft and drift supporting material, or manufacture
Building materials.
With the third method of gelling curing materials comprehensive utilization magnesium chloride tail washings obtained, sequentially include the following steps:
The first step measures magnesium chloride and is saturated tail washings, contain in big mortar, weigh gelling curing materials, adds in 5-15min
Enter in magnesium chloride saturation tail washings, grinding stirring while adding, magnesium chloride is saturated the mass ratio of tail washings and the curing materials that are gelled are as follows: 1:
0.5-1.5；
Second step, is added water, the quality of the quality sum and water of magnesium chloride saturation tail washings and gelling curing materials it
Than for 1:0-0.15, then stirring, grinding 10-30min, it is fabricated to net slurry；
Third step takes net slurry obtained in fine sand and second step, the mass ratio of the fine sand and net slurry are as follows: 1:0.5-
1.5, stirring 10-15min is uniformly mixed, and is fabricated to mortar；
4th step takes mortar obtained in third step, carries out goaf filling, or construct shaft and drift supporting material, or manufacture
Building materials.
The present invention has the advantages that compared with prior art.
1, the present invention solves the gelling solidification that magnesium chloride tail washings is inexpensive, stable, efficient, environmentally protective, strong support
With the comprehensive utilization for having expanded magnesium chloride tail washings.
2, the present invention prepares novel gelling curing materials using magnesium chloride tail washings, is used as gelling solidification with using magnesia
Material is compared, reduce high-temperature calcination generate MgO process procedure, reduce magnesium chloride tail washings gelling solidification with comprehensive utilization at
This.
3, the manufacture craft of gelling curing materials is simple in the present invention, stable storing is reliable, production cost is low, can ensure
Magnesium chloride tail washings is stable, efficiently gelling solidifies and comprehensive utilization.
4, the present invention can handle magnesium chloride tail washings, and realize using magnesium chloride tail washings production gelling solidification new material
Manufacturing process is environmentally protective, slows down magnesium chloride tail washings disposition pressure.
5, the present invention constructs the different demands with building materials manufacture according to goaf filling, shaft and drift supporting material, and utilization is novel
Gelling curing materials carry out gelling solidification to magnesium chloride tail washings, while can also add the production of the materials such as sodium chloride tail salt, fine sand not
With the net slurry solidified body (compression strength 8.45MPa), salt slurry solidified body (5.10~28.02MPa of compression strength) and mortar of intensity
Solidified body (5.44~22.70MPa of compression strength) etc., compression strength is higher, and bearing capacity is strong.On the basis of goaf filling
On, magnesium chloride tail washings, which is gelled, to solidify to expand is applied to the fields such as shaft and drift supporting material is constructed, building materials manufacture, and all handles chlorination
Sodium tail salt and magnesium chloride tail washings slow down ecological environmental protection pressure, realize magnesium chloride tail washings low cost, stablize, is efficient, green ring
The gelling solidification and comprehensive utilization of guarantor.
Detailed description of the invention
The present invention will be further described in detail with reference to the accompanying drawing.
Fig. 1 is the flow chart of gelling curing materials preparation.
Fig. 2 is the flow chart with gelling curing materials comprehensive utilization magnesium chloride tail washings.
Specific embodiment
Embodiment one
The curing materials preparation method as shown in Figure 1, the present invention is gelled, carries out in the steps below:
The first step, milk of lime precipitating reagent preparation: the composition for being 3:1 according to the mass ratio of water and calcium oxide with water and lime
Preparing lime milk liquid, blender stir evenly, after calcium to be oxidized and water fully reacting, as milk of lime precipitating reagent；
Second step, mother liquor measure: measuring magnesium chloride and are saturated mother liquor, measure standard are as follows: lime obtained in the first step
The chlorination magnesium amount that reaction occurs to participate in chemical reaction process for newborn precipitating reagent and magnesium chloride saturation mother liquor accounts for magnesium chloride saturation mother liquor
The 70% of middle whole chlorination magnesium amount；
Third step, stirring sedimentation: by milk of lime precipitating reagent made from the first step, the magnesium chloride for being added to second step measurement is full
In mother liquor, then feed time 5min stirs 40min with blender, after stirring, is settled by sedimentation and thickening equipment
20min；
4th step is separated by solid-liquid separation: being separated by solid-liquid separation, is obtained wet to the slurry after reacting in third step using filter plant
Expect solid；
Drying and dewatering: wet feed solid obtained in 4th step is passed through drying equipment, dry removing mother liquor and water by the 5th step
Point；
6th step, Grinding manufacturing: by solid abrasive obtained in the 5th step to≤100 mesh, so far, be gelled curing materials system
It is standby to complete.
In the first step, after calcium to be oxidized and water fully reacting, calcium chloride, the matter of the calcium chloride and calcium oxide is added
The ratio between amount are as follows: 1:2.
Embodiment two
The curing materials preparation method as shown in Figure 1, the present invention is gelled, carries out in the steps below:
The first step, milk of lime precipitating reagent preparation: the composition for being 4:1 according to the mass ratio of water and calcium oxide with water and lime
Preparing lime milk liquid, blender stir evenly, after calcium to be oxidized and water fully reacting, as milk of lime precipitating reagent；
Second step, mother liquor measure: measuring magnesium chloride and are saturated mother liquor, measure standard are as follows: lime obtained in the first step
The chlorination magnesium amount that reaction occurs to participate in chemical reaction process for newborn precipitating reagent and magnesium chloride saturation mother liquor accounts for magnesium chloride saturation mother liquor
The 80% of middle whole chlorination magnesium amount；
Third step, stirring sedimentation: by milk of lime precipitating reagent made from the first step, the magnesium chloride for being added to second step measurement is full
In mother liquor, then feed time 15min stirs 60min with blender, heavy by sedimentation and thickening equipment after stirring
40min drops；
4th step is separated by solid-liquid separation: being separated by solid-liquid separation, is obtained wet to the slurry after reacting in third step using filter plant
Expect solid；
Drying and dewatering: wet feed solid obtained in 4th step is passed through drying equipment, dry removing mother liquor and water by the 5th step
Point；
6th step, Grinding manufacturing: by solid abrasive obtained in the 5th step to≤100 mesh, so far, be gelled curing materials system
It is standby to complete.
In the first step, after calcium to be oxidized and water fully reacting, calcium chloride, the matter of the calcium chloride and calcium oxide is added
The ratio between amount are as follows: 1:3.
Embodiment three
The curing materials preparation method as shown in Figure 1, the present invention is gelled, carries out in the steps below:
The first step, milk of lime precipitating reagent preparation: the group for being 3.5:1 according to the mass ratio of water and calcium oxide with water and lime
At preparing lime milk liquid, blender is stirred evenly, after calcium to be oxidized and water fully reacting, as milk of lime precipitating reagent；
Second step, mother liquor measure: measuring magnesium chloride and are saturated mother liquor, measure standard are as follows: lime obtained in the first step
The chlorination magnesium amount that reaction occurs to participate in chemical reaction process for newborn precipitating reagent and magnesium chloride saturation mother liquor accounts for magnesium chloride saturation mother liquor
The 75% of middle whole chlorination magnesium amount；
Third step, stirring sedimentation: by milk of lime precipitating reagent made from the first step, the magnesium chloride for being added to second step measurement is full
In mother liquor, then feed time 10min stirs 50min with blender, heavy by sedimentation and thickening equipment after stirring
30min drops；
4th step is separated by solid-liquid separation: being separated by solid-liquid separation, is obtained wet to the slurry after reacting in third step using filter plant
Expect solid；
Drying and dewatering: wet feed solid obtained in 4th step is passed through drying equipment, dry removing mother liquor and water by the 5th step
Point；
6th step, Grinding manufacturing: by solid abrasive obtained in the 5th step to≤100 mesh, so far, be gelled curing materials system
It is standby to complete.
In the first step, after calcium to be oxidized and water fully reacting, calcium chloride, the matter of the calcium chloride and calcium oxide is added
The ratio between amount are as follows: 1:2.5.
Example IV
As shown in Fig. 2, the present invention with gelling curing materials comprehensive utilization magnesium chloride tail washings method, according to the following steps into
Row:
The first step measures magnesium chloride and is saturated tail washings, contains in big mortar, weigh gelling curing materials, be added in 5min
Magnesium chloride is saturated in tail washings, grinding stirring while adding, and magnesium chloride is saturated the mass ratio of tail washings and the curing materials that are gelled are as follows: 1:
0.5；
Second step, stirring, grinding 10min, is fabricated to net slurry；
Third step takes net slurry progress goaf filling obtained in second step, or constructs shaft and drift supporting material.
Another situation after above-mentioned second step, can also carry out following third steps, the 4th step.
Third step, takes net slurry obtained in sodium chloride tail salt and second step, the quality of the sodium chloride tail salt and net slurry it
Than are as follows: 1:1.5, stirring 15min are uniformly mixed, and are fabricated to salt slurry；
4th step takes salt slurry obtained in third step, carries out goaf filling, or construct shaft and drift supporting material, or manufacture
Building materials.
Another situation after above-mentioned second step, can also carry out following third steps, the 4th step.
Third step takes net slurry obtained in fine sand and second step, the mass ratio of the fine sand and net slurry are as follows: 1:1.5 is stirred
It mixes 15min to be uniformly mixed, is fabricated to mortar；
4th step takes mortar obtained in third step, carries out goaf filling, or construct shaft and drift supporting material, or manufacture
Building materials.
Embodiment five
As shown in Fig. 2, the present invention with gelling curing materials comprehensive utilization magnesium chloride tail washings method, according to the following steps into
Row:
The first step measures magnesium chloride and is saturated tail washings, contains in big mortar, weigh gelling curing materials, be added in 15min
Magnesium chloride is saturated in tail washings, grinding stirring while adding, and magnesium chloride is saturated the mass ratio of tail washings and the curing materials that are gelled are as follows: 1:
1.5；
Second step, is added water, the quality of the quality sum and water of magnesium chloride saturation tail washings and gelling curing materials it
Than for 1:0.15, then stirring, grinding 30min, it is fabricated to net slurry；
Third step takes net slurry progress goaf filling obtained in second step, or constructs shaft and drift supporting material.
Another situation after above-mentioned second step, can also carry out following third steps, the 4th step.
Third step, takes net slurry obtained in sodium chloride tail salt and second step, the quality of the sodium chloride tail salt and net slurry it
Than are as follows: 1:1.5, stirring 15min are uniformly mixed, and are fabricated to salt slurry；
4th step takes salt slurry obtained in third step, carries out goaf filling, or construct shaft and drift supporting material, or manufacture
Building materials.
Another situation after above-mentioned second step, can also carry out following third steps, the 4th step.
Third step takes net slurry obtained in fine sand and second step, the mass ratio of the fine sand and net slurry are as follows: 1:1.5 is stirred
It mixes 10-15min to be uniformly mixed, is fabricated to mortar；
4th step takes mortar obtained in third step, carries out goaf filling, or construct shaft and drift supporting material, or manufacture
Building materials.
Embodiment six
As shown in Fig. 2, the present invention with gelling curing materials comprehensive utilization magnesium chloride tail washings method, according to the following steps into
Row:
The first step measures magnesium chloride and is saturated tail washings, contains in big mortar, weigh gelling curing materials, be added in 12min
Magnesium chloride is saturated in tail washings, grinding stirring while adding, and magnesium chloride is saturated the mass ratio of tail washings and the curing materials that are gelled are as follows: 1:1；
Second step, is added water, the quality of the quality sum and water of magnesium chloride saturation tail washings and gelling curing materials it
Than for 1:0.1, then stirring, grinding 20min, it is fabricated to net slurry；
Third step takes net slurry progress goaf filling obtained in second step, or constructs shaft and drift supporting material.
Another situation after above-mentioned second step, can also carry out following third steps, the 4th step.
Third step, takes net slurry obtained in sodium chloride tail salt and second step, the quality of the sodium chloride tail salt and net slurry it
Than are as follows: 1:1, stirring 12min are uniformly mixed, and are fabricated to salt slurry；
4th step takes salt slurry obtained in third step, carries out goaf filling, or construct shaft and drift supporting material, or manufacture
Building materials.
Another situation after above-mentioned second step, can also carry out following third steps, the 4th step.
Third step takes net slurry obtained in fine sand and second step, the mass ratio of the fine sand and net slurry are as follows: 1:1, stirring
12min is uniformly mixed, and is fabricated to mortar；
4th step takes mortar obtained in third step, carries out goaf filling, or construct shaft and drift supporting material, or manufacture
Building materials.
The intensity detection of above-mentioned net slurry, salt slurry and mortar is as follows:
Part net slurry, salt slurry and mortar are taken respectively, in the diaphragm capsule for infusing 100ml respectively, vibration air exhaust strikes off after filling,
Then place solidification, observation solidification situation, curing and demolding, module room temperature indoors, observation variation and hardness, crackle,
Situations such as humidity, curing period, time, the times such as maintenance 3d, 7d, 14d, 28d, 180d carried out pressure, strength test according to the rules.
Through overtesting, the compression strength of net slurry solidified body is 8.45MPa or so, can be used for goaf filling, it can also be used to construct roadway
Support material；The compression strength of salt slurry solidified body is 5.10~28.02MPa, the compression strength of mortar solidified body is 5.44~
22.70MPa, they can be used for goaf filling, it can also be used to construct shaft and drift supporting material, it may also be used for manufacture building materials etc..
Following table is to carry out the net slurry, salt slurry, the test block of mortar part of gel solidification to magnesium chloride tail washings with gelling curing materials
Strength test results.
The present invention can be inexpensive, stable, efficient, environmentally protective gelling solidify magnesium chloride tail washings, be allowed to be suitable for adopt
Filling mine-out area, or for constructing shaft and drift supporting material, or for manufacturing the comprehensive Utilization Ways such as building materials.
Section Example of the invention is explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned realities
Example is applied, it within the knowledge of a person skilled in the art, can also be without departing from the purpose of the present invention
Various changes can be made.
Claims (5)
1. be gelled curing materials preparation method, which is characterized in that carry out in the steps below:
The first step, milk of lime precipitating reagent preparation: the composition for being 3~4:1 according to the mass ratio of water and calcium oxide with water and lime
Preparing lime milk liquid, blender stir evenly, after calcium to be oxidized and water fully reacting, as milk of lime precipitating reagent；
Second step, mother liquor measure: measuring magnesium chloride and are saturated mother liquor, measure standard are as follows: milk of lime obtained is heavy in the first step
The chlorination magnesium amount that reaction occurs to participate in chemical reaction process for shallow lake agent and magnesium chloride saturation mother liquor accounts in magnesium chloride saturation mother liquor entirely
The 70%~80% of portion's chlorination magnesium amount；
Third step, stirring sedimentation: by milk of lime precipitating reagent made from the first step, the magnesium chloride saturation for being added to second step measurement is female
In liquid, then feed time 5-15min stirs 40-60min with blender, heavy by sedimentation and thickening equipment after stirring
20-40min drops；
4th step is separated by solid-liquid separation: being separated by solid-liquid separation using filter plant to the slurry after reacting in third step, it is solid to obtain wet feed
Body；
Drying and dewatering: wet feed solid obtained in 4th step is passed through drying equipment, dry removing mother liquor and moisture by the 5th step；
6th step, Grinding manufacturing: by solid abrasive obtained in the 5th step to≤100 mesh, so far, prepared by gelling curing materials
At.
2. gelling curing materials preparation method according to claim 1, it is characterised in that: to be oxidized in the first step
After calcium and water fully reacting, calcium chloride, the mass ratio of the calcium chloride and calcium oxide are as follows: 1:2~3 is added.
3. with the method such as claim 1 gelling curing materials comprehensive utilization magnesium chloride tail washings obtained, which is characterized in that by with
Lower step carries out:
The first step measures magnesium chloride and is saturated tail washings, contains in big mortar, weigh gelling curing materials, chlorine is added in 5-15min
Change in magnesium saturation tail washings, grinding stirring while adding, magnesium chloride is saturated the mass ratio of tail washings and the curing materials that are gelled are as follows: 1:0.5-
1.5；
Second step, is added water, and the magnesium chloride saturation tail washings and the quality sum of gelling curing materials and the mass ratio of water are
Then 1:0-0.15 stirs, grinds 10-30min, is fabricated to net slurry；
Third step takes net slurry progress goaf filling obtained in second step, or constructs shaft and drift supporting material.
4. with the method such as claim 1 gelling curing materials comprehensive utilization magnesium chloride tail washings obtained, which is characterized in that by with
Lower step carries out:
The first step measures magnesium chloride and is saturated tail washings, contains in big mortar, weigh gelling curing materials, chlorine is added in 5-15min
Change in magnesium saturation tail washings, grinding stirring while adding, magnesium chloride is saturated the mass ratio of tail washings and the curing materials that are gelled are as follows: 1:0.5-
1.5；
Second step, is added water, and the magnesium chloride saturation tail washings and the quality sum of gelling curing materials and the mass ratio of water are
Then 1:0-0.15 stirs, grinds 10-30min, is fabricated to net slurry；
Third step takes net slurry obtained in sodium chloride tail salt and second step, the mass ratio of the sodium chloride tail salt and net slurry are as follows:
1:0.5-1.5 stirring 10-15min to be uniformly mixed, it is fabricated to salt slurry；
4th step takes salt slurry obtained in third step, carries out goaf filling, or construct shaft and drift supporting material, or manufacture building materials.
5. with the method such as claim 1 gelling curing materials comprehensive utilization magnesium chloride tail washings obtained, which is characterized in that by with
Lower step carries out:
The first step measures magnesium chloride and is saturated tail washings, contains in big mortar, weigh gelling curing materials, chlorine is added in 5-15min
Change in magnesium saturation tail washings, grinding stirring while adding, magnesium chloride is saturated the mass ratio of tail washings and the curing materials that are gelled are as follows: 1:0.5-
1.5；
Second step, is added water, and the magnesium chloride saturation tail washings and the quality sum of gelling curing materials and the mass ratio of water are
Then 1:0-0.15 stirs, grinds 10-30min, is fabricated to net slurry；
Third step takes net slurry obtained in fine sand and second step, the mass ratio of the fine sand and net slurry are as follows: 1:0.5-1.5 is stirred
It mixes 10-15min to be uniformly mixed, is fabricated to mortar；
4th step takes mortar obtained in third step, carries out goaf filling, or construct shaft and drift supporting material, or manufacture building materials.
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| CN103953389A (en) * | 2014-04-21 | 2014-07-30 | 化工部长沙设计研究院 | Tachydrite-layer-contianing carnallite type potassic salt ore goaf filling method |
| CN104712359A (en) * | 2015-02-12 | 2015-06-17 | 化工部长沙设计研究院 | Method for preparing goaf backfill materials through potassium tailings manufactured by magnesium-containing potassic salt ore |
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2017
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103470304A (en) * | 2013-09-17 | 2013-12-25 | 云南省化工研究院 | Method for recharging magnesium chloride mother solution into potash salt ore gob |
| CN103953389A (en) * | 2014-04-21 | 2014-07-30 | 化工部长沙设计研究院 | Tachydrite-layer-contianing carnallite type potassic salt ore goaf filling method |
| CN104712359A (en) * | 2015-02-12 | 2015-06-17 | 化工部长沙设计研究院 | Method for preparing goaf backfill materials through potassium tailings manufactured by magnesium-containing potassic salt ore |
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