阅读说明：本技术 一种环保型陶粒及其制备方法 (A kind of environment-friendly type haydite and preparation method thereof ) 是由 梁凤鸣 于 2019-09-27 设计创作，主要内容包括：本发明公开了一种环保型陶粒及其制备方法,具体涉及环保材料加工技术领域,包括处理污泥、煤矸石、粉煤灰、垃圾碎料、硅石、膨胀剂和助溶剂,所述处理污泥包括生活污水污泥、工业废水污泥和河底淤泥。本发明通过使用处理污泥、煤矸石、粉煤灰和垃圾碎料做主要生产原料,便于获取,生产成本低,煤矸石作为煤炭固体废物代替粘土作为粘结剂,减少环境破坏,将垃圾废料生产成建筑用产品,节能环保,便于调节膨胀系数,生产的陶粒质轻,强度高,品质好,利用冷却器和多级循环冷却水箱配合使废气温有效降温,并脱硫、脱硝处理,消除二噁英、恶臭和烟尘,生产污水净化沉淀并循环使用,节约资源,保护环境,有利于实现可持续发展。(The invention discloses a kind of environment-friendly type haydites and preparation method thereof, more particularly to environment-friendly materials processing technique field, including processing sludge, gangue, flyash, rubbish particle, silica, swelling agent and cosolvent, the processing sludge includes domestic sewage sludge, industrial wastewater sludge and bed-silt.By the present invention in that with processing sludge, gangue, flyash and rubbish particle do main production raw material, convenient for obtaining, production cost is low, gangue replaces clay as binder as Coal-solid-waste, reduce environmental disruption, garbage waste is produced into product for building, energy conservation and environmental protection, convenient for adjusting the coefficient of expansion, the haydite of production is light, intensity is high, quality is good, make exhaust gas temperature effective temperature-reducing using cooler and the cooperation of multiple stage circulation cooling water tank, and desulfurization, denitration process, eliminate dioxin, stench and flue dust, production waste purification is precipitated and is recycled, it economizes on resources, protect environment, it is advantageously implemented sustainable development.)

1. a kind of environment-friendly type haydite, it is characterised in that: wherein used in major ingredient by weight include: processing sludge 45-55 parts, 20-30 parts of gangue, 8-12 parts of flyash, 8-12 parts of rubbish particle, 1-5 parts of silica, 8-10 parts of swelling agent and cosolvent 1-5 Part.

2. a kind of environment-friendly type haydite according to claim 1, it is characterised in that: the processing sludge includes sanitary sewage dirt The moisture content of mud, industrial wastewater sludge and bed-silt, the processing sludge is 9-15%.

3. a kind of environment-friendly type haydite according to claim 1, it is characterised in that: the cosolvent is specially quick lime, institute The molar ratio for stating quick lime and raw materials for production is set as 1-6: 200.

4. a kind of environment-friendly type haydite according to claim 1, it is characterised in that: the haydite for make building brick, Water purification filter or environmentally friendly planting cultivation.

5. a kind of preparation method of environment-friendly type haydite, it is characterised in that: concrete operation step are as follows:

Step 1: processing sludge, gangue, flyash, rubbish particle, silica and swelling agent are taken in proportion, is respectively put into ball milling Milling, is added quick lime and water for powder obtained after evenly mixing in machine, obtains potting mixing after reacting sufficiently；

Step 2: the potting mixing that step 1 is obtained is dried, and when potting mixing moisture content in 20-30%, uses disk Formula marble forming machine is granulated, and obtains spherolite raw material；

Step 3: being dried spherolite raw material made from step 2, and the spherolite raw material after drying are put into preheating in rotary kiln processing, Then it improves rotary kiln firing temperature and carries out thermostatic expansion calcining, finally promote rotary kiln firing temperature again and carry out constant-temperature molding Calcining, obtains ceramsite sand semi-finished product；

Step 4: the ceramsite sand semi-finished product fired in step 3 are put into and slowly cools to 300-400 DEG C in cylinder cooler and takes It stands, it is sieved out when being cooled to room temperature, obtain finished product haydite, it is broken again that the particle and bulk screened out returns to raw material Processing；

Finished product haydite: being packed and is transported storage by step 5, completes the production preparation of haydite；

Step 6: being collected and handle to the exhaust gas generated in step 4, and the exhaust gas of collection is first passed through cooler and is tentatively dropped Exhaust gas utilization multiple stage circulation cooling water tank reducing temperature twice after cooling is extended flue length by temperature processing, realizes repeatedly heat exchange, To make exhaust gas temperature be down to 200 DEG C hereinafter, being passed through dedusting and desulfurizing tower again, it is molten to prepare exhaust-gas treatment using sulfur elimination and denitrfying agent Liquid sprays mixing to exhaust gas by exhaust-gas treatment solution boils and by atomizer, bonds soot dust granule, take off to exhaust gas Sulphur, denitration process, flue dust are fallen with water droplet, and final purification exhaust gas is discharged from chimney；

Step 7: being collected and handle to the sewage generated in manufacturing process, and sewage is passed through sewage purifier precipitating, is added Active carbon, clay and quick lime and sewage mixed processing, are adsorbed the polluter in sewage, and decoloration, deodorization and sterilization disappear Purified water is recycled later for poison.

6. a kind of preparation method of environment-friendly type haydite according to claim 5, it is characterised in that: handled in the step 1 Lime reaction sterilization is added by domestic sewage sludge, industrial wastewater sludge and bed-silt in sludge, and dry using solar energy sludge Change equipment to handle to obtain, the main chemical compositions of potting mixing are Al₂O₃: 16-21%, SiO₂: 35-45%, Fe₂0₃: 5.5- 10.5%, CaO:5-15% and C:15-25%.

7. a kind of preparation method of environment-friendly type haydite according to claim 5, it is characterised in that: dry in the step 2 Temperature setting is 100-120 DEG C, and spherolite raw meal particulate is dimensioned to 8-15mm.

8. a kind of preparation method of environment-friendly type haydite according to claim 5, it is characterised in that: dried in the step 3 Temperature is 70-80 DEG C, drying time 1-2h, and preheating temperature is 400-600 DEG C, preheating time 20-30min, thermostatic expansion Calcination temperature is 800-1000 DEG C, and thermostatic expansion calcination time is 40-60min, and constant-temperature molding calcination temperature is 1200-1300 DEG C, constant-temperature molding calcination time is 10-30min.

Technical field

The present invention relates to environment-friendly materials processing technique field, it is more particularly related to a kind of environment-friendly type haydite and Preparation method.

Background technique

Haydite is a kind of lightweight aggregate of production foamed in rotary kiln.It has spherical shape, and surface is smooth and hard Firmly, internal is in honeycomb, has excellent performance, if density is low, cylindrical compress strength is high, porosity is high, coefficient of softing height, frost resistance Well, alkali resistant aggregate reaction is excellent etc., is widely applied and building materials, gardening, food and drink, flame-proof thermal insulation material, chemical industry, petroleum Equal departments, application field is more and more wider, but dioxin toxic gas can be generated in the traditional handicraft of haydite, and there are serious pollutions Environmental problem.

The patent of invention of 104163617 B of patent application publication CN disclose a kind of haydite production method and haydite and The application of haydite, including flyash, waterworks sludge, clay are raw material, and oyster shell is the haydite preparation method of main additive And the purposes of this haydite.The pore structure that haydite is improved by addition oyster shell, increases adsorption capacity and exchange capacity, makes It has more excellent good water correction effect.Sewerage disposing haydite raw material of the present invention mainly use waste-flyash and Sludge, it is the treatment of wastes with processes of wastes against one another, low in cost, be conducive to environment sustainable development.This haydite is that a kind of good functional water processing is filled out Material.Due into haydite rough surface there is bigger serface to be easy to bio-film colonization effect by high-temperature calcination, and it is light strong Degree height can bear high load capacity hydraulic blow with stability for a long time, and there is bio-film colonization to carry out denitrification dephosphorization function, be a kind of water The excellent filler of process performance, can be used for the water treatment technologies such as biofilter, artificial swamp.

But the haydite production method and haydite that provide in above-mentioned technical proposal and haydite are applied in practice still Need a large amount of clays as binder, excavating clay still will cause environmental disruption, the haydite internal void mistake of production technology production Greatly, and its coefficient of expansion is not easy to adjust.

Summary of the invention

In order to overcome the drawbacks described above of the prior art, the embodiment of the present invention provides a kind of environment-friendly type haydite and its preparation side Method does main production raw material by using processing sludge, gangue, flyash and rubbish particle, convenient for obtaining, production cost Low, gangue replaces clay as binder as Coal-solid-waste, reduces environmental disruption, garbage waste is produced into building With product, it is beneficial to energy conservation environmental protection, silica is added and improves silicone content, improves the refractoriness of haydite, quick lime is quenched to powder, drop Its low fusing point, and swelling agent is added, the adjusting coefficient of expansion is convenient for make ball using drying-molding roasting technique of preheating-expansion- Grain raw material can even inflation, molecule reaction slowly stablizes, improves the porosity of haydite, keep its lighter, and intensity is high, quality It is good.

To achieve the above object, the invention provides the following technical scheme: a kind of environment-friendly type haydite, wherein used in major ingredient It by weight include: sludge 45-55 parts, 20-30 parts of gangue, 8-12 parts of flyash, 8-12 parts of rubbish particle, silica 1- of processing 5 parts, 8-10 parts of swelling agent and 1-5 parts of cosolvent.

Preferably, the processing sludge includes domestic sewage sludge, industrial wastewater sludge and bed-silt, and the processing is dirty The moisture content of mud is 9-15%.

Preferably, the cosolvent is specially quick lime, and the molar ratio of the quick lime and raw materials for production is set as 1-6: 200。

Preferably, the haydite is for making building brick, water purification filter or environmentally friendly planting cultivation.

A kind of preparation method of environment-friendly type haydite, concrete operation step are as follows:

Step 1: processing sludge, gangue, flyash, rubbish particle, silica and swelling agent are taken in proportion, is respectively put into Milling, is added quick lime and water for powder obtained after evenly mixing in ball mill, obtains potting mixing after reacting sufficiently；

Step 2: the potting mixing that step 1 is obtained is dried, and when potting mixing moisture content in 20-30%, is made It is granulated with disc type marble forming machine, obtains spherolite raw material；

Step 3: being dried spherolite raw material made from step 2, and the spherolite raw material after drying are put into preheating in rotary kiln Processing, then improves rotary kiln firing temperature and carries out thermostatic expansion calcining, and it is permanent finally to promote the progress of rotary kiln firing temperature again Temperature molding calcining, obtains ceramsite sand semi-finished product；

Step 4: the ceramsite sand semi-finished product fired in step 3 are put into cylinder cooler and slowly cool to 300-400 It DEG C takes out and to stand, it is sieved when being cooled to room temperature, obtains finished product haydite, it is broken that the particle and bulk that screen out return to raw material It re-works；

Finished product haydite: being packed and is transported storage by step 5, completes the production preparation of haydite；

Step 6: the exhaust gas generated in step 4 is collected and is handled, at the beginning of the exhaust gas of collection is first passed through cooler Cooling processing is walked, the exhaust gas utilization multiple stage circulation cooling water tank reducing temperature twice after cooling, extends flue length, realization is repeatedly changed Heat, so that exhaust gas temperature be made to be down to 200 DEG C hereinafter, dedusting and desulfurizing tower is passed through again, at sulfur elimination and denitrfying agent preparation exhaust gas Manage solution, by exhaust-gas treatment solution boils and by atomizer to exhaust gas spray mix, bond soot dust granule, to exhaust gas into The processing of row desulphurization and denitration, flue dust are fallen with water droplet, and final purification exhaust gas is discharged from chimney；

Step 7: being collected and handle to the sewage generated in manufacturing process, and sewage is passed through sewage purifier precipitating, Active carbon, clay and quick lime and sewage mixed processing is added, is adsorbed the polluter in sewage, decoloration, deodorization are simultaneously killed Bacterium disinfection, purified water is recycled later.

Preferably, sludge is handled in the step 1 to be added by domestic sewage sludge, industrial wastewater sludge and bed-silt Lime reaction sterilization, and handle to obtain using solar energy sludge drying device, the main chemical compositions of potting mixing are Al₂O₃: 16-21%, SiO₂: 35-45%, Fe₂O₃: 5.5-10.5%, CaO:5-15% and C:15-25%.

Preferably, drying temperature is set as 100-120 DEG C in the step 2, and spherolite raw meal particulate is dimensioned to 8- 15mm。

Preferably, drying temperature is 70-80 DEG C, drying time 1-2h, preheating temperature 400-600 in the step 3 DEG C, preheating time 20-30min, thermostatic expansion calcination temperature is 800-1000 DEG C, and thermostatic expansion calcination time is 40- 60min, constant-temperature molding calcination temperature are 1200-1300 DEG C, and constant-temperature molding calcination time is 10-30min.

Technical effect and advantage of the invention:

1, main production raw material is done by using processing sludge, gangue, flyash and rubbish particle, it is raw convenient for obtaining Produce it is at low cost, gangue as Coal-solid-waste replace clay be used as binder, reduction environmental disruption, garbage waste is produced At product for building, it is beneficial to energy conservation environmental protection, silica is added and improves silicone content, improves the refractoriness of haydite, quick lime is to powder It is quenched, its fusing point is reduced, and swelling agent is added convenient for adjusting the coefficient of expansion, uses the molding roasting work of drying-preheating-expansion- Skill enables spherolite raw material even inflation, and molecule reaction slowly stablizes, improves the porosity of haydite, keep its lighter, intensity Height, quality are good；

2, by preparing potting mixing, preparing spherolite raw material, prepare ceramsite sand semi-finished product and be packed and stored five steps lifes The haydite of processing is produced, formula rate is moderate, controls by processing temperature and time, can effectively ensure that the porosity of haydite and resistance to Compressive Strength increases its structural stability, can be improved waterproof, the humidity resistance of construction wall applied to building field, in haydite Portion's pore structure is conducive to sound-insulating and heat-insulating, and heat insulation effect is good, additionally it is possible to and it is applied to field of purification and environment protection field, is widely used, Facilitate popularization；

3, cold using cooler and multiple stage circulation by being collected processing to the exhaust gas and sewage that generate in production process But exhaust gas temperature is down to 200 DEG C hereinafter, prepare exhaust-gas treatment solution using sulfur elimination and denitrfying agent by water tank cooperation, to exhaust gas into The processing of row desulphurization and denitration, eliminates dioxin, stench and flue dust, sewage purification is precipitated, and active carbon, clay and quick lime is added Absorption, sterilization and disinfection, are recycled purified water, are conducive to economize on resources, and protect environment, realize sustainable development.

Specific embodiment

It is clearly and completely described below in conjunction with the technical solution of the embodiment of the present invention, it is clear that described implementation Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects It encloses.