last year, the real estate industry has accelerated downward, the demand for cement has declined significantly, and the overcapacity has intensified. " In the future, cement plants will change from the competition of "quantity" to the competition of "quality". To achieve the survival of the fittest, the number of cement kiln production lines will decrease year by year. Faced with the current situation, Zhang Zhenkun, chairman of China Cement Network and CEO of Asia Cement (China) Holding Company, said.
The following is the full text of the report:
China's future demand
for cement With the rapid development of China's economy, the demand for cement will show a downward trend. By 2060, the per capita cement consumption will be about 400 kg/person/year, reaching the level of developed countries.
In the future, the competition of cement plants will change from "quantity" to "quality". In the fierce competition, the number of cement kiln production lines will decrease year by year.
energy saving and consumption reduction of
production line 1.2.3
Cement Mill Composite Powder Grinding New Ideas
Using Construction Waste And that ground composite pow is pneumatically conveyed to a cement mill iron warehouse for storage. It has many advantages such as sufficient hot air, strong drying capacity and large output.
of superfine powder of https://img7.ccement.com/richtext/img/3x2aeng4jdk1689833899986.
cement mill" superfine powder generally refers to the specific surface area greater than 500m0HT ML0 UNK2 8 20 HTML 0 UNK2 9/kg. The activity of composite admixture is excited by physical means. It is mixed into cement to reduce the ratio of clinker and improve the workability of cement. 0 HTML0 UNK3 0 Traditional φ3.2 × 13m & φ3. Ball mill for grinding ultra-fine powder has small diameter and long length, so φ3.0 HTML0 UNK3 1 Rotary kiln production reduction can be selected to maximize benefits 0 HTML0 UNK3 2 In the past few years, everyone has tried every means to improve the output of rotary kiln. There are some problems such as large resistance of preheater, incomplete combustion of pulverized coal in calciner, increase of heat consumption and decrease of clinker quality. As a result, there has been an upsurge in the transformation of preheater production. 0 HTML0 UNK3 3 With the decrease of cement demand, the output of rotary kiln is not the higher the better, but to find the best output, to achieve the lowest cost and the best quality. 0 HTML0 UNK3 4 < IMG SRC = "The reason for the large difference in https://img7.ccement.com/richtext/img/63wntjtm8bu1689833943695. is that the domestic alternative fuel industry chain is incomplete.". Cement plants encounter many problems, such as difficult collection, high purchase price and poor substitution effect. 0 HTML0 UNK3 5 The main ways to improve the use effect of alternative fuels are to broaden the sources of alternative fuels, to integrate pretreatment and co-disposal into cement production plants, to use external furnaces to improve the treatment capacity of alternative fuels, and to use bypass ventilation when necessary to reduce the impact of harmful elements. 0 HTML0 UNK3 6 Biomass gas technology research and application 0 HTML0 UNK3 7 Biomass gas is produced after biomass pyrolysis gasification system, which is sprayed into the decomposition furnace as denitrification reducing agent. Reduce NO0HTML0 UNK3 8X0HTML0 UNK3 9 emissions. Biomass gas has calorific value and can be used instead of coal. 0 HTML0 UNK4 0 Biomass gas new technology advantages: First, biomass gas denitration, no need to spray ammonia, can achieve NO0 HTML0 UNK4 1X0HTML0 UNK4 2 emissions less than 50mg/Nm0 HTML0 UNK4 330 HTML0 UNK4 4. Second, biomass gas can replace about 60% of coal. Thirdly, there are few harmful components in biomass gas, in which potassium, sodium, chlorine and other harmful components remain in the residue, which is used as agricultural fertilizer and does not enter the decomposition furnace to avoid system skinning and ring formation. And fourthly, a heat source can be provide for that grinding station. 0 HTML 0 UNK4 5 Research on High Performance Concrete 0 HTML 0 UNK4 6 High performance concrete has the characteristics of high strength, high volume stability, high durability, high economy, high fluidity and low hydration heat. 0 HTML 0 UNK4 7 The main types of high performance concrete are: high strength concrete, vegetation concrete, permeable concrete, aquatic protection concrete and so on. 0 HTML0 UNK4 8 Cement enterprises should not only produce high-quality cement, but also produce high-performance concrete, and expand the industrial chain from cement, aggregate, machine-made sand, admixture, concrete and other aspects, so as to enhance brand value and improve the overall operating results. 0 HTML0 UNK4 9 Research on new carbon capture technology 0 HTML0 UNK5 0 Grinding metallurgical solid waste steel slag (CaO) into fine powder, capturing CO0HTML0 UNK5 120HTML0 UNK5 2 in industrial tail gas (cement kiln, etc.), and treating it through special process and special catalyst. And the treated steel slag powder is used as an admixture to produce the low-carbon cement. 0 HTML0 UNK5 3 Existing cases in China: annual output of carbon capture steel slag powder is 300,000 tons, CO0HTML0 UNK5 420 HTML0 UNK5 5 capture capacity is about 2.
浙公网安备33010802003254号