CN103693987B - Preparation method of porous shale brick - Google Patents
Preparation method of porous shale brick Download PDFInfo
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- CN103693987B CN103693987B CN201310681617.XA CN201310681617A CN103693987B CN 103693987 B CN103693987 B CN 103693987B CN 201310681617 A CN201310681617 A CN 201310681617A CN 103693987 B CN103693987 B CN 103693987B
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Abstract
The invention provides a preparation method of a porous shale brick. The preparation method is characterized by firstly wet-milling, grinding and sieving remaining collophanite associated potassium-containing shale after potassium extraction to enable the grain size of the shale to be below 200 meshes, grinding the shale into powder after drying the shale, then mixing the prepared powder uniformly and then forming the mixture through compression, putting the product in a high temperature furnace and carrying out gradient calcination, and taking out and cooling the product after calcination, thus preparing the porous shale brick. The preparation method provided by the invention has the beneficial effects that 1) the porous shale brick prepared by the preparation method can bear the pressure above 17mpa, so that the porous shale brick has strong fracture resistance capacity and is almost suitable for all the building fields; 2) the measured porosity of the porous shale brick prepared by the preparation method is less than 20% and meets the national standard, so that the porous shale brick can be used in most building fields; 3) by using the tailings (the remaining collophanite associated potassium-containing shale after potassium extraction) after potassium extraction and a pigment, the porous shale brick is quite low in production cost, has the advantage of turning waste into wealth and is an environment-friendly product.
Description
Technical field
The invention provides a kind of preparation method of porous shale brick, particularly adopt raw material for remaining collophanite association potassium-bearing shale (i.e. EPCAPS) after carrying potassium.
Background technology
At present, the construction material of widespread use mainly sintered clay brick in domestic construction, the hollow fragment of brick of concrete small size, aerated-block, gypsum sheet material energy, and use clay brick will to consume solidifying soil resource non-renewable in a large number, reduce agricultural cultivating & ground area, government department is to limit its use under construction, and concrete small size hollow brick is large because of its unit weight, constructs complicated, affect secondary decoration, easy generation shrinkage crack, shortcomings such as thermal property difference and affect its application under construction.
At building field, shale porous brick is the most frequently used a kind of basic architecture material arrived, and it has many advantages: 1, shale porous brick construction work use in not by expand with heat and contract with cold change impact.2, with the body of wall that it is built by laying bricks or stones, do not need to adopt any anticracking, reinforcement measure, can directly plaster, and wall skin does not play drum, not crack, can reduce engineering cost, be the material of construction of frame structure engineering first-selection.3, having good sound insulation, heat insulation effect, is one of current green building material widelyd popularize of country.
Summary of the invention
Technical problem to be solved by this invention is the preparation method providing a kind of porous shale brick, effective utilization is remaining collophanite association potassium-bearing shale after carrying potassium, energy-conserving and environment-protective, obtained brick bearing resistance is large, plasticity is good, soundproof effect, heat insulation effect are all better than traditional clay brick, and it is lightweight, labour intensity when saving transport power and build.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of preparation method of porous shale brick, it is characterized in that: after first carrying potassium, remaining collophanite association potassium-bearing shale carries out wet-milling pulverizing, sieves, its granularity is made to reach below 200 orders, the obtained powder of grinding after drying, then obtained powder is mixed rear compression moulding, put into the calcining of High Temperature Furnaces Heating Apparatus gradient, take out cooling after calcining and can obtain porous shale brick.
By such scheme, be also mixed with colorant, described colorant is any one in zirconium praseodymium yellow, cobalt chrome black and vanadium zirconium basket, and the incorporation of described colorant is remaining collophanite association potassium-bearing shale 2% ~ 6% after carrying potassium.
By such scheme, its gradient calcining concrete grammar is: carry out calcining 2 hours room temperature-300 DEG C, along with the rising of temperature, part mineral decompose, recrystallization, formation cenotype; Calcining is carried out 6 hours at 300 DEG C-950 DEG C, newly-generated ore deposit constitutes the skeleton of vitrified brick mutually, give brick strength, calcining is carried out 3 hours at 950 DEG C-design temperature, produce eutectic mixture and form liquid phase, filled by hole, design temperature is wherein 1110 DEG C ~ 1140 DEG C, be incubated 2 hours, make micropore minimizing in base substrate, density increases, intensity improves.
The preparation method of the shale porous brick that the present invention proposes has following beneficial effect:
1) flexural capacity of traditional shale porous brick is not high, and the pressure that shale porous brick prepared by the present invention can bear is more than 17mpa, and therefore, its flexural capacity is strong, is almost applicable to all building fields.
2) traditional shale porous brick void content is comparatively large, and the void content that shale porous brick prepared by the present invention records is less than 20%, meets national standard, can be used for most of building field.
3) employ the tailing after carrying potassium (potassium-bearing shale of remaining collophanite association after carrying potassium) and colorant in the raw material that the present invention adopts, therefore, its production cost is extremely low, has the advantage turned waste into wealth, and is environmentally friendly product.
Accompanying drawing explanation
Fig. 1 is the schematic diagram in kind of the porous shale brick sample after sinter molding;
Fig. 2 is the tangent plane microscopic iage figure of porous shale brick sample.
Embodiment:
In order to understand the present invention better, illustrate content of the present invention further below in conjunction with embodiment, but content of the present invention is not only confined to the following examples.
Embodiment 1
A kind of shale porous brick, has been prepared by the raw material of following proportioning: EPCAPS:100% colorant: 0%
The preparation method of the shale porous brick that the present invention proposes, comprises the following steps:
(1) pulverization process: below EPCAPS ball mill crushing to 200 orders, need the wet-milling that adds water in mechanical milling process;
(2) suction filtration process: the raw material of milled in step (1) is taken out and carries out suction filtration, dry again after suction filtration;
(3) forming processes: by step (2) gained raw mill, after mixing in tabletting machine compression molding;
(4) high temperature sintering: sinter at 1140 DEG C of temperature in High Temperature Furnaces Heating Apparatus after shaping, obtained shale porous brick.
Its calcining system is:
Room temperature-300 DEG C 2 hours
300 DEG C-950 DEG C 6 hours
950 DEG C-1140 DEG C 3 hours
Be incubated 2 hours
In Fig. 2, black part is the pore in shale brick, and white portion is crystalline phase, and the interface in the middle of white portion is crystal boundary, and green portion is then added colorant, and as can be seen from the figure this shale brick is really porous shale brick, and crystallization is better.
EPCAPS component and mass percentage, lower same:
| MgO | Al 2O 3 | SiO 2 | P 2O 5 | K 2O | CaO | Other |
| 2.29% | 10.8% | 40.6% | 12.2% | 7.57% | 20.9% | 5.64% |
Embodiment 2
A kind of shale porous brick, prepared by the raw material of following proportioning:
EPCAPS:98% colorant: 2%
The preparation method of the shale porous brick that the present invention proposes, comprises the following steps:
(1) pulverization process: below EPCAPS ball mill crushing to 200 orders, need the wet-milling that adds water in mechanical milling process;
(2) suction filtration process: the raw material of milled in step (1) is taken out and carries out suction filtration, dry again after suction filtration;
(3) forming processes: by step (2) gained raw mill, add coloring material for mixing evenly after in tabletting machine compression molding;
(4) high temperature sintering: sinter at 1130 DEG C of temperature in High Temperature Furnaces Heating Apparatus after shaping, obtained shale porous brick.
Its calcining system is:
Room temperature-300 DEG C 2 hours
300 DEG C-950 DEG C 6 hours
950 DEG C-1130 DEG C 3 hours
Be incubated 2 hours
Fig. 1 is the schematic diagram in kind of the porous shale brick sample after sinter molding.
Embodiment 3
A kind of shale porous brick, prepared by the raw material of following proportioning:
EPCAPS:95% colorant: 5%
The preparation method of the shale porous brick that the present invention proposes, comprises the following steps:
(1) pulverization process: below EPCAPS ball mill crushing to 200 orders, need the wet-milling that adds water in mechanical milling process;
(2) suction filtration process: the raw material of milled in step (1) is taken out and carries out suction filtration, dry again after suction filtration;
(3) forming processes: by step (2) gained raw mill, add coloring material for mixing evenly after in tabletting machine compression molding;
(4) high temperature sintering: sinter at 1140 DEG C of temperature in High Temperature Furnaces Heating Apparatus after shaping, obtained shale porous brick.
Its calcining system is:
Room temperature-300 DEG C 2 hours
300 DEG C-950 DEG C 6 hours
950 DEG C-1140 DEG C 3 hours
Be incubated 2 hours
Flexural capacity and void content test
Shale porous brick obtained by embodiment 1 ~ embodiment 3, through flexural capacity and void content test, its flexural capacity and void content as shown in table 1:
Table 1:
| Sample | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Maximum folding strength (mpa) | 21.463 | 21.842 | 22.665 |
| Void content (%) | 18.96 | 19.91 | 16.99 |
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. the preparation method of a porous shale brick, it is characterized in that: after first carrying potassium, remaining collophanite association potassium-bearing shale carries out wet-milling pulverizing, sieves, its granularity is made to reach below 200 orders, the obtained powder of grinding after drying, then obtained powder is mixed rear compression moulding, put into the calcining of High Temperature Furnaces Heating Apparatus gradient, take out cooling after calcining and can obtain porous shale brick; Its gradient calcining concrete grammar is: carry out calcining 2 hours room temperature-300 DEG C; Calcining is carried out 6 hours at 300 DEG C-950 DEG C; Calcining is carried out 3 hours at 950 DEG C-design temperature; Design temperature is wherein 1110 DEG C ~ 1140 DEG C, is incubated 2 hours.
2. the preparation method of porous shale brick according to claim 1, it is characterized in that also being mixed with colorant, described colorant is any one in zirconium praseodymium yellow, cobalt chrome black and vanadium zirconium basket, and the incorporation of described colorant is remaining collophanite association potassium-bearing shale 2% ~ 6% after carrying potassium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310681617.XA CN103693987B (en) | 2013-12-13 | 2013-12-13 | Preparation method of porous shale brick |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310681617.XA CN103693987B (en) | 2013-12-13 | 2013-12-13 | Preparation method of porous shale brick |
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| Publication Number | Publication Date |
|---|---|
| CN103693987A CN103693987A (en) | 2014-04-02 |
| CN103693987B true CN103693987B (en) | 2015-06-24 |
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| CN201310681617.XA Expired - Fee Related CN103693987B (en) | 2013-12-13 | 2013-12-13 | Preparation method of porous shale brick |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1850695A (en) * | 2006-05-30 | 2006-10-25 | 李石牛 | Vacuum internal-combustion type grey-brick-tile baking method using shale as raw material |
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2013
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1850695A (en) * | 2006-05-30 | 2006-10-25 | 李石牛 | Vacuum internal-combustion type grey-brick-tile baking method using shale as raw material |
Non-Patent Citations (1)
| Title |
|---|
| 磷矿共生含钾页岩特征及蚀变法浸钾过程;黄志良;《中国矿业》;19960531;第5卷(第3期);第21-24页 * |
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| CN103693987A (en) | 2014-04-02 |
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Granted publication date: 20150624 Termination date: 20171213 |