Why is cement in bulk?
Developing bulk cement is not only a reform of traditional cement circulation mode, but also conducive to the efficiency and modernization of building construction, and also has obvious economic benefits.
Development significance of bulk cement;
(1) Developing bulk cement can make cement production enterprises gain economic benefits. We know that the production cost of cement is mainly composed of raw materials, fuel, equipment depreciation and labor costs, of which fuel and labor costs account for about 20% of the production cost of cement. If you produce bulk cement, you can save a lot of labor costs. At the same time, because there is no need for a packaging workshop, electricity, wrapping paper and cotton yarn for sewing can be saved. Overall, the cost of producing bulk cement can be reduced by about 20% compared with bagged cement.
(2) The development of bulk cement has also brought benefits to users. According to the situation of cement sales market in China, the sales price of bulk cement is generally cheaper than that of bagged cement. According to the current packaging paper price, the ex-factory price difference between bulk cement and bagged cement is 25-30 yuan per ton. If the cost of "bulk cement is kept in bulk" is deducted (explained later), users can buy bulk cement at the price of 20-25 yuan per ton, which is a great savings for users with large cement consumption. It can greatly reduce the project cost.
(3) Developing bulk cement can save wood for the country and reduce unnecessary waste and loss.
It is estimated that 60 tons of packing paper can be saved per 10,000 tons of bulk cement, which is equivalent to 330 cubic meters of wood. It takes 72,000 kWh of electricity, 78 tons of coal and 22 tons of caustic soda to produce 60 tons of paper. In addition, for every ton of bulk cement transported 1 10,000 tons, the cement loss can be reduced by 4% compared with bagged cement.
Supplement:
The social benefit of developing bulk cement is far greater than its economic benefit, because it has a wide impact on society, benefiting thousands of households and all walks of life, mainly as follows:
(1) The use of bulk cement can improve the reliability and safety of construction projects and make people's lives and property suffer less losses. Because bulk cement has good stability and quality when leaving the factory, it is not easy to deteriorate due to moisture during transportation and storage, so its reliability and safety are guaranteed when used in engineering construction. However, bagged cement is easy to deteriorate due to moisture during transportation and storage, which reduces its strength. If we don't pay attention to it, it will bring hidden dangers to the project or cause losses to people's lives and property.
(2) Developing bulk cement can improve workers' working conditions and realize civilized production in cement enterprises. The traditional cement production in China adopts paper bag packaging, and the packaging workshop is mostly manual or semi-mechanized. The working environment of workers is very bad, which greatly affects their physical and mental health. If cement is transported in bulk, mechanized and automatic production can be realized, which can not only save a lot of manual labor, but also change the production environment of the factory, so that cement production enterprises can develop from labor-intensive to knowledge-intensive and from high-pollution industries to garden-style civilized production enterprises.
(3) Developing bulk cement can reduce environmental pollution and benefit people's health. Bagged cement not only brings dust pollution to the surrounding environment due to the damage of paper bags during loading, unloading and transportation, but also pollutes the air due to continuous unpacking during use. In addition, the construction of mixed concrete with bagged cement has also brought noise pollution to the surrounding area. If bulk cement is used and ready-mixed concrete is developed, the above situation will basically not occur, which is very beneficial to society.
(4) The development of bulk cement can protect the ecological balance, save resources and energy, and is conducive to the implementation of the sustainable development strategy, which is of strategic significance. Because the development of bulk cement can save wood, from another perspective, it protects forests and is conducive to ecological balance. According to the statistics of relevant departments, the forest coverage rate in China is only about 13%, which is 9 percentage points lower than the world average forest coverage rate of 22%. For example, the per capita forest in China is less than 2 mu, which is only about 15% of the world average. It is in such a barren forest condition that the wood used for cement packaging is equivalent to more than 20% of China's log output every year. If this part of wood can be saved, on the one hand, it can save resources for the country and make it play a more important role; On the other hand, we can also reduce deforestation and leave more green vegetation, so as to maintain the balance of natural ecology, play the role of wind, sand, flood control and air purification, and thus create a good natural environment for human survival. From this perspective, the development of bulk cement is by no means an expedient measure, but a century-long plan for the benefit of future generations.