1.Ignore of the Design of Dry Mix Mortar Plant
Manufacturers focus on the function of the function of equipment. Therefore, although the equipment designed by them can meet the requirements of production.
(1) The Design of Dry Mix Mortar Plant is not Enough
Device vendors are more concerned with the capabilities of the device. Although the front and rear connection of the equipment can meet the production requirements, the design of the maintenance and maintenance operation space is insufficient, which brings unsafe hidden dangers to production maintenance and worker operation. Equipment suppliers generally do not have construction engineering, power supply and distribution, technical personnel in water supply and drainage related disciplines, no systematic engineering project design knowledge, and are not familiar with relevant design specifications, leading to the owner's dry mortar. The production line cannot meet the requirements related to construction engineering in terms of environmental protection, energy conservation, sanitation, construction safety, and fire safety design.
(2) The Design of Dry Mix Mortar Plant is not Standardized
In the building materials industry, traditional cement, glass, ceramic and brick products have professional production lines. The design of the production line has formed standard standards, and even the corresponding design manual is also available to designers. Professional design is a basic requirement for the healthy development of each industry.
Dry mix mortar production process is relatively simple, but its production has significant characteristics. It is reflected in: 1 dry mix mortar is produced by professional production plants using automated production technology. Dry mix mortar formulations are different for different foundation and building construction requirements. Dry mix mortar production requires a variety of functional additives. There are many types, the mixing ratio is in a few percent and a few thousandths. High measurement accuracy and high mixing uniformity are required. Dry mix mortar construction uses special tools, and the construction site is clean and environmentally friendly.
Based on the above characteristics, the overall design of the dry mortar production line requires a reasonable and standardized design to ensure product quality. 2. Points to Pay Attention to the Design of Dry Mix Mortar Plant
2.1 General Graphic Design
Construction of a dry mixed mortar plant with a certain scale, the plant area should not be less than 25 acres. The site is preferably close to the source of the raw materials and should be considered for the convenience of large transport vehicles. The mixing tower has an area of about 200 square meters and the warehouse area is not less than 3,000 square meters. In addition to considering the living and office facilities in the production plant area, the turnover of cement and finished bulk trucks should be fully considered, and the storage location of mobile finished products should be retained.
The master plan design should follow the general industrial design rules. Due to the large amount of gravel, the overall layout should consider the convenience of transportation. It is necessary to consider the space where the vehicle stops to wait for it. Sand treatment and drying equipment should be placed above the minimum wind frequency of the entire equipment, as close as possible to the heat source and power source.
2.2 Process Design
(1) Aggregation Pre-treatment Process
1 China's natural sand resources are increasingly scarce, and mechanism sand has been widely used in dry-mix mortar production. Considering the limestone storage, feed, crushing and screening system design, the pre-treatment process of aggregates should fully consider the preparation process of sand; compared with natural sand, the mechanism sand contains a large number of stone powder, many characteristics of soil and edge. The purification of the mechanism sand must be considered and the process of controlling the amount of stone powder and the shape of the particles must be considered.
2 natural wet sand drying. In the domestic dry-mix mortar production line, the drying equipment mainly has double drum dryer and three-turn drum dryer. The moisture content of dry sand can meet the requirement of less than 0.5%, but the temperature of the sand after drying depends only on the natural cooling of the conveying and storage links, and there is no effective control link, which is difficult to meet the expected requirements. Therefore, it is necessary to increase the cooling process to ensure that the temperature of the sand is controlled below 65 °C.