1. technical name

Technology for producing low thermal conductivity and high strength ceramic partition board from industrial solid waste

2. technology type

Full life cycle resource conservation and recycling technology

3. scope of application

In the building materials industry, products are suitable for building partition materials.

4. Brief description of technology

This technology characterizes the performance of industrial solid waste such as coal gangue and fly ash, and adds some ceramic raw materials to undergo high-temperature crystal phase reconstruction to produce a partition wall material with low thermal conductivity and high strength.

5. technical information

(1) Compressive strength <6MPa;(2) Thermal conductivity <0.25W/m·K;(3) Product density 400-500kg/m³;(4) Water absorption <1%.

6. Commercial applications

no

7. Help/support you hope to receive during the technology transfer process

no

8. equipment investment

According to the list of equipment required for an annual output of 100,000 cubic meters and the market price of the equipment, the technical life is estimated to be 10 years, and the total equipment investment is estimated to be 55.4 million yuan. The following are the prices of the main equipment. 1. A total of 5 ball mills cost 4.5 million yuan; 2. A total of 1 spray drying tower cost 3 million yuan; 3. A tunnel kiln cost 18.3 million yuan; 4. A cutting line cost 3.5 million yuan.

9. Annual operation and maintenance fee

Through material balance calculation, we can calculate the consumption and costs of various energy per unit product when the equipment is running at full capacity. The raw materials are sanitary porcelain waste, polishing brick waste, shale or industrial tailings as the main raw materials. The details are as follows: Raw materials need 0.75 tons, totaling 40 yuan; water needs 0.25 tons, totaling 2 yuan; electricity needs 220 degrees, totaling 154 yuan; natural gas needs 120 cubic meters, totaling 377 yuan; Labor costs need 20 yuan; Equipment depreciation costs 55 yuan; repair costs 5 yuan; management fees 18 yuan; total energy consumption per unit requires 671 yuan.

10. investment recovery period

According to the regulations of relevant departments on the calculation cycle of the ceramic industry, the calculation period of the project is 15 years, including 1 year for the construction period and 14 years for the production and operation period (including 1 year for the production period and 13 years for the production period). The production period is calculated based on 80% of the production capacity, and the remaining years are calculated based on 100% of the production capacity. After calculation, the static investment payback period =(4-1)+3968/5290 =3.75(years).

11. added benefit

For houses that need to be heated by wall-mounted furnaces in winter in northern China, the room temperature will be kept at 20 ° C based on a house of 20 square meters. If external wall insulation measures are not taken, an average of 10 cubic meters of natural gas will be consumed every day, and the cost will be 20 yuan; If foamed ceramic products are used on the external wall, the average natural gas consumption will be 4 cubic meters per day and the cost is 8 yuan. It can be seen that due to the low thermal conductivity of foamed ceramics, the market prospect is broad.

12. comprehensive benefits

Based on an annual output of 100,000 m³ of products and a product density of 500kg/m³:(1) The ex-factory price of the product is 1200 yuan/m ³, the cost is 850 yuan/m³, the output value is 120 million yuan, and the profit is 35 million yuan;(2) Consumption of industrial solid waste 20,000 tons;(3) The products of this project are more than 20% thinner as partition materials than traditional wall materials. The use of this project's products as 100㎡ residential buildings will increase the use area by 5㎡.

13. Level of impact of obstacles on technology transfer

This technical achievement competes with ordinary cement blocks and other products, and has the problem of high price. However, this product has high strength, no water absorption, good quality, and certain competitive advantages.

14. technology maturity

The production process of this project is based on the production method of ceramic bricks. Except for the difference between the kiln and the kiln used for ordinary ceramic bricks, the equipment used in other processes such as ball milling and powder granulation is basically the same as ordinary ceramic bricks. At present, the kiln mainly produces two kiln types: tunnel kiln and roller kiln. Compared with ordinary kilns, the cooling zone is longer, so the equipment and technology are relatively mature.

15. technical applicability

The technology of this project is mainly applied in the field of building materials manufacturing. The raw materials are mainly industrial solid waste such as coal gangue, fly ash and other solid waste and ordinary ceramic raw materials such as clay and feldspar, which can be satisfied locally; manufacturing equipment kilns, spray towers, cutting equipment and other industries are relatively mature in China; the fuel is mainly natural gas, which can be satisfied locally. The downstream technology chain is the product application field-the construction industry. Compared with ordinary partition materials, the products of this project have low density, high compressive strength (more than 6MPa), low thermal conductivity (<0.25W/m·K), and the characteristics of no water absorption and sound insulation, and have certain market competition.

16. technical stability

The technology of this project draws on mature ceramic tile production processes, technologies and equipment. The technology is relatively mature, so there will be no technical stability problems during the production process.

17. technical safety

The technology of this project mainly uses industrial solid waste such as coal gangue and fly ash as raw materials. It is a solid waste treatment project that uses clean energy-natural gas to burn it. Moreover, there is dust removal equipment in the production process, and there is no waste, waste gas, wastewater, etc. Pollutants are discharged and will not cause pollution to the environment.

18. Barriers to technology transfer and promotion

The local market is highly competitive

19. intellectual property transfer

Obtained a patent for preparing lightweight building materials from industrial solid waste lead and zinc ore. The patent name is: A method for producing ceramic insulation boards from lead and zinc ore tailings (ZL201310754417.2). The patent owner is Xianyang Ceramics Research and Design Institute Co., Ltd.(this unit belongs to China General Building Materials Research Institute Co., Ltd.).