CN103964801B - A kind of flyash extraction aluminum oxide by product that utilizes prepares method that is non-burning brick or building block - Google Patents
A kind of flyash extraction aluminum oxide by product that utilizes prepares method that is non-burning brick or building block Download PDFInfo
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- CN103964801B CN103964801B CN201410063604.0A CN201410063604A CN103964801B CN 103964801 B CN103964801 B CN 103964801B CN 201410063604 A CN201410063604 A CN 201410063604A CN 103964801 B CN103964801 B CN 103964801B
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- building block
- burning brick
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- adobe
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
The invention discloses a kind of flyash extraction aluminum oxide by product that utilizes and prepare method that is non-burning brick or building block, comprising: respectively calcium silicate slag, desulfurated plaster and unslaked lime are carried out grinding formation≤180 object powder, with for subsequent use; By weight by calcium silicate slag 35 ~ 45 parts, the water of 15 ~ 25 parts, flyash, desulfurated plaster 3 ~ 5 parts, unslaked lime 8 ~ 13 parts, river sand 15 ~ 30 parts, cement 1 ~ 5 part and 20 ~ 25 parts carries out mix and blend; Compound after stirring is delivered in forming machine the process that is pressed and makes adobe; Maintenance is carried out in the adobe of making.Non-burning brick or building block prepared by present method has good mechanical property, and be up to state standards requirement, also improves the utilization ratio of the trade waste such as calcium silicate slag, flyash, solves current industrial waste discharge amount excessive and can not get the problem that effectively utilizes.
Description
Technical field
The invention belongs to industrial solid castoff recycling field, particularly a kind of flyash extraction aluminum oxide by product that utilizes prepares method that is non-burning brick or building block.
Background technology
Produce in fly ash-lime stone sintering process in the process of aluminum oxide, flyash and raw meal prepared from lime are calcined and are generated from efflorescence alumina clinker, and this grog and solid waste---the calcium silicate slag produced after alkali lye mixing stripping, its output is larger.Only apply as raw material in burning clinker of cement at present, there is no application in other side.In recent years, along with country forbids the increasing of the dynamics that solid clay brick uses, add domestic residue resource and the heavy demand of construction market, non-burning brick, building block has become one of important novel wall material.Non-burning brick, building block is by appropriate proportioning raw materials, under high-pressure molding effect, storeroom is fully contacted, under suitable curing condition, make full use of the aquation gelling reaction that active substance in raw material occurs each other, reach suitable intensity at short notice, various aspects of performance can be up to state standards, and has the features such as technical process is simple, energy-conserving and environment-protective.How Appropriate application flyash extracts the by product calcium silicate slag of aluminum oxide, is the problem being badly in need of urgently will solving by utilization of waste as resource.
Summary of the invention
In order to overcome the deficiencies in the prior art, the object of the invention is to propose a kind of flyash extraction aluminum oxide by product that utilizes and prepare method that is non-burning brick or building block, prepared non-burning brick or building block has good mechanical property, be up to state standards requirement, thus achieve the recycling of solid waste.
Technical scheme provided by the invention is:
Utilize flyash to extract aluminum oxide by product and prepare a method that is non-burning brick or building block, comprise the following steps:
The pre-treatment of step one, raw material: respectively calcium silicate slag, desulfurated plaster and unslaked lime are carried out grinding formation≤180 object powder, with for subsequent use, wherein, calcium silicate slag is that flyash calcines the alumina clinker generated and the solid waste produced after alkali lye mixing stripping with raw meal prepared from lime;
Step 2, by weight first by calcium silicate slag 35 ~ 45 parts, 15 ~ 25 parts, flyash and desulfurated plaster 3 ~ 5 parts are delivered in stirrer and carry out mix and blend, churning time is 1 ~ 5 minute, stirring velocity is 130 ~ 150 revs/min, unslaked lime 8 ~ 13 parts and river sand 15 ~ 30 parts is added while stirring, add cement 1 ~ 5 part after stirring again and carry out mix and blend 1 ~ 3 minute, the water finally adding 20 ~ 25 parts again carries out stirring 5 ~ 15 minutes;
Step 3, shaping: the compound after stirring in step 2 is delivered in forming machine the process that is pressed, and forming pressure is 20 ~ 30MPa, makes adobe;
Step 4, maintenance: maintenance is carried out in the adobe of making in step 3, obtains non-burning brick or building block.
Preferably, the described flyash extraction aluminum oxide by product that utilizes prepares the method for non-burning brick building block, maintenance described in step 4 is natural curing, namely natural curing obtain non-burning brick or building block in 28 days, the specific implementation process of natural curing is carry out maintenance under outside temperature is the condition of 20 ~ 25 DEG C, the first seven day every day of maintenance, continuous spraying stopped after 7 days all to jetting liquid in the adobe of making three to five times.
Preferably, the described flyash extraction aluminum oxide by product that utilizes prepares the method for non-burning brick building block, in maintenance processes, first three day every day all sprayed the first liquid in the adobe of making, latter three day every day all sprayed the second liquid in the adobe of making, and the last day sprays the third liquid in the adobe of making.
Preferably, the described flyash extraction aluminum oxide by product that utilizes prepares the method for non-burning brick building block, the first liquid described is nitrous acid calcium solution, and described the second liquid is the mixed solvent of ferrous sulfate and trolamine, and the third liquid described is metabisulfite solution.
Preferably, the described flyash extraction aluminum oxide by product that utilizes prepares method that is non-burning brick or building block, and described cement is silicate cement, aluminosulfate cement, glass fiber reinforced cement, self-stress ferro-aluminate cement or white cement, colored cement.
Preferably, the described flyash extraction aluminum oxide by product that utilizes prepares method that is non-burning brick or building block, and the forming pressure described in step 3 is 25MPa.
The flyash extraction aluminum oxide by product that utilizes of the present invention prepares method that is non-burning brick or building block, compared with prior art, one is adopt calcium silicate slag, and calcium silicate slag has the characteristic that calcium oxide content is high, alkali content is low, its chemical composition and cement clinker are close, mainly with CaO and SiO
2be main, mineral composition is based on Y-Dicalcium Phosphate (Feed Grade).Be 75% through its activity index of experimental test, reach the activity index requirement of national Specification industrial residue.Therefore, this material has certain active mineral material, can have the performance characteristics playing some strength.Two be utilize fly ash in electric power plant, wet process of FGD by-produced gypsum prepares burden, desulfurated plaster major ingredient is CaSO4, CaCO3 and Ca (OH) 2, preparation raw material that is non-burning brick, building block can be it can be used as to mix, achieve the recycling of solid waste.Three is that the highest usage quantity of solid waste reaches more than 70%, raw materials used cheap, has higher economic benefit and social benefit.Four is that production process is pollution-free, without the need to firing, without the need to the measure such as steam-cured, has the advantages such as product strength is high, heat-insulation and heat-preservation, energy-conserving profit waste, once shaped.Five is in the last maintenance stage, in adobe, a few days ago all sprays the liquid of configuration, effectively can strengthen the intensity of adobe.The present invention by optimizing materials proportioning, improves the utilization ratio of the trade waste such as calcium silicate slag, flyash, solves current industrial waste discharge amount excessive and can not get the problem that effectively utilizes.By adopting rational production technique, when guaranteeing that brick strength meets national standard, reducing brick body production cost, there is good economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is the schema utilizing flyash to extract aluminum oxide by product to prepare the method for non-burning brick or building block of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, can implement according to this with reference to specification sheets word to make those skilled in the art.
Embodiment 1:
The invention provides a kind of flyash extraction aluminum oxide by product that utilizes and prepare method that is non-burning brick or building block, comprising:
The pre-treatment of step one, raw material: respectively calcium silicate slag, desulfurated plaster and unslaked lime are carried out grinding formation≤180 object powder, with for subsequent use, wherein, calcium silicate slag is that flyash calcines the alumina clinker generated and the solid waste produced after alkali lye mixing stripping with raw meal prepared from lime;
Step 2, by weight first by calcium silicate slag 45Kg, flyash 25Kg and desulfurated plaster 5Kg is delivered in stirrer and carries out mix and blend, churning time is 5 minutes, stirring velocity is 150 revs/min, unslaked lime 13Kg and river sand 30Kg part is added while stirring, add cement 5Kg after stirring again and carry out mix and blend 3 minutes, the water finally adding 25Kg again carries out stirring 15 minutes, and described cement is silicate cement;
Step 3, shaping: the compound after stirring in step 2 is delivered in forming machine the process that is pressed, and forming pressure is 30MPa, makes adobe;
Step 4, maintenance: natural curing is carried out in the adobe of making in step 3, namely natural curing obtain non-burning brick or building block in 28 days, the specific implementation process of natural curing is carry out maintenance under outside temperature is the condition of 25 DEG C, the first seven day every day of maintenance is all to jetting liquid in the adobe of making three to five times, continuous spraying stopped after 7 days, in maintenance processes, first three day every day all sprayed nitrous acid calcium solution in the adobe of making, in the adobe of making, all spray the mixed solvent of ferrous sulfate and trolamine latter three day every day, the last day is to sulfuring up acid sodium solution in the adobe of making.
Step 5, to test by the property indices such as outward appearance, intensity, weight of standard to product, and detect ultimate compression strength during 7 days, 28 days in maintenance, dispatch from the factory after the assay was approved.
Non-burning brick, block performance detected result:
Embodiment 2:
The invention provides a kind of flyash extraction aluminum oxide by product that utilizes and prepare method that is non-burning brick or building block, comprising:
The pre-treatment of step one, raw material: respectively calcium silicate slag, desulfurated plaster and unslaked lime are carried out grinding formation≤180 object powder, with for subsequent use, wherein, calcium silicate slag is that flyash calcines the alumina clinker generated and the solid waste produced after alkali lye mixing stripping with raw meal prepared from lime;
Step 2, by weight first by calcium silicate slag 35Kg, flyash 15Kg and desulfurated plaster 3Kg is delivered in stirrer and carries out mix and blend, churning time is 1 minute, stirring velocity is 130 revs/min, unslaked lime 8Kg and river sand 15Kg is added while stirring, add cement 1Kg after stirring again and carry out mix and blend 1 ~ 3 minute, the water finally adding 20Kg again carries out stirring 5 minutes, and described cement is aluminosulfate cement;
Step 3, shaping: the compound after stirring in step 2 is delivered in forming machine the process that is pressed, and forming pressure is 20MPa, makes adobe;
Step 4, maintenance: natural curing is carried out in the adobe of making in step 3, namely natural curing obtain non-burning brick or building block in 28 days, the specific implementation process of natural curing is carry out maintenance under outside temperature is the condition of 20 DEG C, the first seven day every day of maintenance is all to jetting liquid in the adobe of making three to five times, continuous spraying stopped after 7 days, in maintenance processes, first three day every day all sprayed nitrous acid calcium solution in the adobe of making, in the adobe of making, all spray the mixed solvent of ferrous sulfate and trolamine latter three day every day, the last day is to sulfuring up acid sodium solution in the adobe of making.
Step 5, to test by the property indices such as outward appearance, intensity, weight of standard to product, and detect ultimate compression strength during 7 days, 28 days in maintenance, dispatch from the factory after the assay was approved.
Non-burning brick, block performance detected result:
Embodiment 3:
The invention provides a kind of flyash extraction aluminum oxide by product that utilizes and prepare method that is non-burning brick or building block, comprising:
The pre-treatment of step one, raw material: respectively calcium silicate slag, desulfurated plaster and unslaked lime are carried out grinding formation≤180 object powder, with for subsequent use, wherein, calcium silicate slag is that flyash calcines the alumina clinker generated and the solid waste produced after alkali lye mixing stripping with raw meal prepared from lime;
Step 2, by weight first by calcium silicate slag 40Kg, flyash 20Kg and desulfurated plaster 4Kg is delivered in stirrer and carries out mix and blend, churning time is 3 minutes, stirring velocity is 140 revs/min, unslaked lime 10Kg and river sand 22Kg is added while stirring, add cement 3Kg after stirring again and carry out mix and blend 2 minutes, the water finally adding 22Kg again carries out stirring 10 minutes, and described cement is glass fiber reinforced cement;
Step 3, shaping: the compound after stirring in step 2 is delivered in forming machine the process that is pressed, and forming pressure is 25MPa, makes adobe;
Step 4, maintenance: natural curing is carried out in the adobe of making in step 3, namely natural curing obtain non-burning brick or building block in 28 days, the specific implementation process of natural curing is carry out maintenance under outside temperature is the condition of 22 DEG C, the first seven day every day of maintenance is all to jetting liquid in the adobe of making three to five times, continuous spraying stopped after 7 days, in maintenance processes, first three day every day all sprayed nitrous acid calcium solution in the adobe of making, in the adobe of making, all spray the mixed solvent of ferrous sulfate and trolamine latter three day every day, the last day is to sulfuring up acid sodium solution in the adobe of making.
Step 5, to test by the property indices such as outward appearance, intensity, weight of standard to product, and detect ultimate compression strength during 7 days, 28 days in maintenance, dispatch from the factory after the assay was approved.
Non-burning brick, block performance detected result:
By the non-burning brick or building block flat appearance that aforesaid method is obtained, N/D and slight crack, have good mechanical property, and be up to state standards requirement.
Although embodiment of the present invention are open as above, but it is not restricted to listed in specification sheets and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.
Claims (6)
1. utilize flyash to extract aluminum oxide by product and prepare a method that is non-burning brick or building block, it is characterized in that, comprise the following steps:
The pre-treatment of step one, raw material: respectively calcium silicate slag, desulfurated plaster and unslaked lime are carried out grinding formation≤180 object powder, with for subsequent use, wherein, calcium silicate slag is that flyash calcines the alumina clinker generated and the solid waste produced after alkali lye mixing stripping with raw meal prepared from lime;
Step 2, by weight first by calcium silicate slag 35 ~ 45 parts, 15 parts, flyash and desulfurated plaster 3 ~ 5 parts are delivered in stirrer and carry out mix and blend, churning time is 1 ~ 5 minute, stirring velocity is 130 ~ 150 revs/min, unslaked lime 8 ~ 13 parts and river sand 15 parts is added while stirring, add cement 1 ~ 5 part after stirring again and carry out mix and blend 1 ~ 3 minute, the water finally adding 20 ~ 25 parts again carries out stirring 5 ~ 15 minutes;
Step 3, shaping: the compound after stirring in step 2 is delivered in forming machine the process that is pressed, and forming pressure is 20 ~ 30MPa, makes adobe;
Step 4, maintenance: maintenance is carried out in the adobe of making in step 3, obtains non-burning brick or building block.
2. utilize flyash extraction aluminum oxide by product to prepare the method for non-burning brick building block as claimed in claim 1, it is characterized in that, maintenance described in step 4 is natural curing, namely natural curing obtain non-burning brick or building block in 28 days, the specific implementation process of natural curing is carry out maintenance under outside temperature is the condition of 20 ~ 25 DEG C, the first seven day every day of maintenance, continuous spraying stopped after 7 days all to jetting liquid in the adobe of making three to five times.
3. utilize flyash extraction aluminum oxide by product to prepare the method for non-burning brick building block as claimed in claim 2, it is characterized in that, in maintenance processes, first three day every day all sprayed the first liquid in the adobe of making, latter three day every day all sprayed the second liquid in the adobe of making, and the last day sprays the third liquid in the adobe of making.
4. utilize flyash extraction aluminum oxide by product to prepare the method for non-burning brick building block as claimed in claim 3, it is characterized in that, the first liquid described is nitrous acid calcium solution, and described the second liquid is the mixed solvent of ferrous sulfate and trolamine, and the third liquid described is metabisulfite solution.
5. utilize flyash to extract aluminum oxide by product as claimed in claim 1 and prepare method that is non-burning brick or building block, it is characterized in that, described cement is silicate cement, aluminosulfate cement, glass fiber reinforced cement, self-stress ferro-aluminate cement, white cement or colored cement.
6. utilize flyash to extract aluminum oxide by product as claimed in claim 5 and prepare method that is non-burning brick or building block, it is characterized in that, the forming pressure described in step 3 is 25MPa.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105693148B (en) * | 2014-11-27 | 2018-10-09 | 中国科学院过程工程研究所 | A kind of light-weight building insulation blocks and preparation method thereof |
| CN105254265B (en) * | 2015-09-29 | 2017-12-19 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | Silico-calcium slag autoclaved brick and its manufacture method |
| CN105481336A (en) * | 2015-12-30 | 2016-04-13 | 南通天蓝环保能源成套设备有限公司 | Method for preparing high-strength baking-free brick from domestic refuse incinerator slag |
| CN107619249A (en) * | 2017-10-10 | 2018-01-23 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | Mine filling material and preparation method thereof |
| CN108911622B (en) * | 2018-06-29 | 2021-07-30 | 中国神华能源股份有限公司 | White mud-based water permeable brick and preparation method thereof |
| CN112960922A (en) * | 2021-02-03 | 2021-06-15 | 中冶南方都市环保工程技术股份有限公司 | Desulfurized fly ash based cementing material and preparation and application thereof |
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