In July 2006, China Xinghua Village was born.
The application of fly ash is an important event in China thermal power industry, as well as in cement, concrete, baking-free bricks and other building materials industries.
First of all, making full use of fly ash is the real way to reduce the cost of power generation.
China uses 654.38+0.4 billion tons of raw coal as thermal power generation every year. The total amount of ash discharged accounts for about 30% of the total amount of raw coal used-about 450-500 million tons.
At present, the contradiction between coal and electricity is prominent. First, the amount of coal gangue mixed in high-quality coal is increasing. Therefore, the ash discharge of thermal power plants is increasing. Second, the electricity consumption can't meet the demand, and the thermal power production capacity is still building and expanding 50 million kilowatts every year, that is, it is still increasing150,000 tons of ash every year. Thirdly, the utilization of ash directly affects the cost of thermal power generation. If the million kilowatt thermal power plant realizes zero emission, zero pollution and zero stacking of fly ash, and all of them are used with high added value, the power generation cost per kilowatt hour can be reduced by 3-5 cents. Fourth, a large amount of ash pollutes the environment and occupies land resources.
Second, making good use of fly ash is actually to reduce wasteful investment.
If a newly-built1000 MW thermal power plant is unwilling to attach importance to the industrial chain construction of storing ash, selling and processing green products, it will waste thousands of acres of fertile land or original ecological "mountains, water, fields, forests, roads and wetlands" and continue to pollute the old road through the old method of transporting and discharging ash to the ash dam through several kilometers or more pipelines.
Moreover, it will cost the country and the collective people hundreds of millions of yuan, and the daily maintenance and fines in the later period are endless, which is a heavy burden that affects and increases the power generation cost 10%. It also brings high cost and low value consequences to daily applications and future applications. This is actually a waste of people's money.
Third, it is wrong not to study and study the application technology of fly ash in depth.
Firstly, it is uneconomical to grind activated fly ash with a grinder.
In the past and now, nearly 1000 thermal power plants in China have followed the traditional habit of using ash. In order to realize "refining and activating" three-grade coarse ash to facilitate sales needs, they have spent tens of millions and tens of millions of yuan on grinding equipment, which is called physical and technical means to activate fly ash.
The patented technology of fly ash cement in Xinghua Village, China does not advocate the practice of exchanging huge power consumption for a little "activity" of fly ash. Instead, a new "doping theory" is adopted. Under the guidance of this theory, chemical excitation and physical supplementary adjustment are carried out to achieve the balance of mineral chemical composition, and the effect is very good. No matter what kind of coarse and fine ash, there is basically no difference in benefits and technical indicators in the production of building materials and cement products.
Second, it is not a contract technology to introduce large-scale block equipment at a large price and produce baking-free bricks and blocks by steam curing to absorb part of fly ash.
The practice of patented technology of fly ash cement in Xinghua Village, China for many years has proved that it is primitive and backward, and it is a wrong way to waste people and money. The utilization mode of fly ash must be changed to a green ecological road without grinding, steaming, burning, electricity, secondary waste of coal resources and pollution. The resource value of the original "gold" attribute of fly ash is completely restored.
Fourth, the waste of resources caused by long-term application of fly ash under the wrong technical guidance.
At present, the application of fly ash is an abuse of valuable fly ash resources. Full fly ash is used as filler in brick making and other products, and it is a low-level wasteful application to pursue the high content of fly ash unilaterally, which does not conform to the scientific law of blending fly ash to produce building materials.
The high dispersibility and fineness of fly ash have great utilization value. How can it be used as a filler and wasted?
Before the publication of this declaration, the inventor of Xinghua Village's patent technology had an article criticizing Shanghai's wrong practice of using fly ash three years ago, which can still be searched on major domestic websites.
Fifth, the use of fly ash does not pay attention to scientific rationality.
At present, the application of fly ash mistakenly applies the basic research results of single fly ash to various products with fly ash content. No matter how good the fly ash is, it can only play an auxiliary role in building materials products with a certain or appropriate dosage, which conforms to the characteristics and characteristics of fly ash. The design of building materials products with a durability of 50 ~ 100 years must have a variety of matching richness.
Sixth, recognize the "technical misunderstanding" and popularize the new technology of "turning ash into gold".
No matter what quality of fly ash-high calcium, high carbon, high sulfur, high iron, coarse particles and other fly ash, Xinghua Village's patented technology has its corresponding control and supplementary technical means to ensure its original activity, characteristics and characteristics, and directly apply it in place.
Can't do anything extra, additional, superfluous. The reason why there are all kinds of wrong behaviors in the application of fly ash is that there is still a lack of extensive technical research on fly ash in order to obtain a scientific and reasonable understanding. Only by combining the single technical achievement of fly ash with the technical achievement system of fly ash building materials products can we realize the "great achievement of comprehensive integration of technical achievements".
Seventh, only fly ash is good in the world.
After China basically converts 300 million tons of fly ash into high value-added building materials products every year, the fly ash in China thermal power industry no longer pollutes the environment, which is only the first big gain; Its second biggest gain is to increase income by 50-10 billion RMB per year; The third harvest is that "only fly ash is good in the world". Fortunately, the fineness of fly ash particles is about 60-80 percentage points, which is beyond the fineness level of existing cement. Even if ordinary ball mills spend more electricity, it is difficult to grind out the fineness of existing fly ash. The good aspect is the high activity of fly ash and its excellent chemical and physical properties and characteristics. It no longer needs to consume "secondary energy and electric power resources" for processing. The most direct thing is that it can be scientifically compounded with a small amount of clinker powder to produce cement products that meet international and domestic standards. Fortunately, China produces cement1.300 million tons every year through the traditional cement method of "one kiln and two grinders". From now on, we only need to scientifically mix one third of the original fired materials with various activated waste residue powder and fly ash to produce new energy-saving cement. Since then, China has saved about 50 billion ~ 654.38+000 billion kWh of "one kiln and two mills" and other "comprehensive electricity charges" consumed in cement production every year. So as to effectively control the endless construction of thermal power plants due to power shortage, effectively alleviate the excessive shortage of coal, and effectively protect the virtuous circle of sustainable and rational development and utilization of coal.
Eighth, the whole country should unite and make good use of fly ash resources scientifically.
It is suggested that all walks of life in China, especially the leaders, experts, technicians of the national thermal power system, relevant colleges and universities, scientific and technological research institutions and enthusiasts who care about fly ash, make scientific and rapid use of this valuable resource with one heart and one mind. Quickly set off a wave of scientific application of fly ash in the whole country, and vigorously save coal, electricity, cement and other building materials needed for thermal power production.
1, if you want to make good use of fly ash, you must quickly mobilize the enthusiasm of cement workers across the country.
Vigorously call on outstanding scientific and technological talents in cement, concrete, baking-free bricks and building materials industries to develop and utilize fly ash resources in thermal power systems.
The resources of thermal power system in China are too precious. Unfortunately, some people in China who want coal and electricity, and some experts in China who focus on energy-saving cement, energy-saving concrete and energy-saving baking-free bricks can't change their ideas from such a high level of understanding. This is actually a major event in China's energy conservation work.
2. Vigorously advocate "moving green ecological cement to the nearest thermal power plant".
The green ecological industrial chain has been developed, which can produce at least 400-500 million tons of high-quality high-strength cement and 400-500 million tons of high-quality high-strength concrete.
This is not just an ordinary event. Half of this green ecological cement is made of fly ash, which is completely out of the "one kiln and two grinding systems" used in the traditional cement production mode.
3. The cement production mode of "three powders in one" invented by people in Xinghua Village, China, has realized the precious value of fly ash most thoroughly and maximally.
As early as ten years ago, China invented the cement production mode of "three powders in one" (clinker, activated waste residue composite powder and fly ash each account for one third). It's just that the people in Xinghua Village of China are folk inventors, and they can't get the national scientific research funds such as "863" and "973" to support their development. They identified 65438 to 0996 scientific and technological achievements, applied for two invention patents in 2002, and were authorized in 2005 and 2009 respectively.
The utilization of fly ash can only "turn waste into treasure" and be physically adjusted, which is the fundamental technical means. Because it is green, ecological and energy-saving. Through the latest cement production mode of "three powders in one", it is directly transformed into green ecological cement, concrete, baking-free bricks and other building materials products, and no longer consumes energy and power resources twice.
How can we use chemical products-alkali to stimulate like "setting stone"? Are there so many alkaline mineral and chemical products resources in China? Don't! Yes, it is. It is also the main raw material of the country's most basic industry, which is related to the national economy and people's livelihood and national security. We can't break the whole into parts for the development of the country's "condensed stone" bulk products. Unless some models are made, it will not be sustainable, and there will be no corresponding amount of coal and electricity resources to consume, resulting in secondary pollution.
Ninth, fly ash is a treasure, and it is most important for the factory director and chairman to change their technical concepts.
As far as the power plant is concerned, the factory director must fully realize how much energy, financial resources and manpower you have spent and how much fly ash you can make good use of, which means that you brought back a corresponding amount of coal after bargaining in the coal mine. Can you still sit back and watch the fly ash? You also think that fly ash is a waste residue discharge, which is particularly troublesome. Should it be regarded as an auxiliary industry or a tertiary industry that is not the main power generation industry, and handed over to industrial companies at will, or contracted by local people, and how much should it be collected? With the technological progress of the times, we should keep pace with the times, benefit the country and the people, benefit the factory and be irresponsible.
Secondly, according to expert research and enterprise application, fly ash should not be wrongly used as the main filling material for producing baking-free bricks and blocks, and it also needs steam curing of "secondary energy" and foaming of aluminum powder. Can't be used to fill pits and pave roads. Fly ash is the carrier of various chemical additives. Adding a ton of fly ash to make five tons of chemical additives costs more than 1000 yuan per ton. Fly ash is the main original ecological powder which is not energy and electricity consumption in all grades of cement, and the scientific and reasonable dosage is 30 ~ 50%. As long as it is under the guidance of science, fly ash is no longer ground, and the latest cement production method of "three powders in one" is adopted. The durability and other technical indexes of cement produced by mixing fly ash are high-grade cement, which is about 100 yuan higher than ordinary cement.
The director and chairman of the Third Thermal Power Plant should take the initiative to leave class if they can't build the green system industrial chain of the thermal power plant in the future. Why? Because you don't cherish the people's trust in you too much, on the basis of your hard work in the past, the broad masses of workers and leaders trusted you, and after handing over the power to you to operate, they didn't have any service work, didn't fall behind in their studies, and fell behind in accepting new things, so they had to step down from the current power throne. After learning again, wait for the future.
Tenth, we should focus on improving the understanding of the biggest users of fly ash-cement manufacturers, concrete and baking-free brick manufacturers.
At present and in the future, the cost price of cement, concrete and baking-free brick is completely controlled by people with fly ash resources, and the era when cement, concrete and baking-free brick are priced by cement factory directors and concrete and baking-free brick manufacturers will never return.
If all fans of fly ash technology and application industry in China communicate more on the Internet with an honest and scientific attitude, and exchange more technical problems and achievements, the application of fly ash in China will surely be in the forefront of the world.