Cradle to Consumer
Identity ID
2118ef6a-58f4-4bf2-b2d8-c2c87d4aacf4
Materials
Associated ID
da7b7e48-0117-4c12-82a2-419f64c48af6
Included activities starts
Included activities ends
Description
This dataset is a market dataset representing the consumption market of the region. The dataset includes the transport of the product from the gate to the consumption end, and the transport service is calculated based on the transport situation of the product in the region. The product represented by this dataset is emulsified granular ANFO explosive, one of the widely used main explosives in modern blasting engineering. Its characteristic is that it combines the advantages of the low cost of porous granular ANFO and the good water resistance of emulsion explosives, with energy density and water resistance significantly superior to ordinary ANFO. Its upstream key raw materials are fertilizer-grade porous granular ammonium nitrate and petroleum-derived fuel oil, and downstream it is specifically used in various rock blasting projects. The system boundary of this dataset covers the entire process starting from the entry of purchased porous granular ammonium nitrate and composite oil-phase raw materials into the on-site mixing plant or ground preparation station, going through raw material pretreatment, mixing, cooling and screening, and packaging until the output of qualified explosive products, including the upstream stages of the production and transport of raw and auxiliary materials and energy. Infrastructure such as production equipment and plant construction is not included within the dataset boundary. The data inventory is formed by merging data from multiple sources.
Activity Description
The process of the emulsion explosives production line mainly includes oil-water phase preparation, continuous emulsification, cooling, continuous sensitization, charging, packaging and other links.
1. Preparation of aqueous solution
This production line directly uses liquid ammonium nitrate (containing about 96.8% ammonium nitrate, about 3.0% water, and about 0.2% impurities) to prepare aqueous solution. The ammonium nitrate solution is transported by tanker to outside the water and oil phase preparation workshop. After passing the inspection, it is pumped to the liquid ammonium nitrate storage tank for heat preservation and backup. When in use, the liquid ammonium nitrate is pumped into the water phase preparation tank, continues to be heated to meet the process temperature (90°C-100°C) requirements, and is sent to the next process by the water phase transfer pump.
2. Preparation of oil phase solution
The oil phase materials (the main components are paraffin, ozokerite, petroleum jelly, and engine oil) are weighed and added to the oil phase wax melting tank for melting. The oil phase materials that have reached the process temperature (95°C ± 5°C) and the measured emulsifier (the main ingredient is Span-80) are placed in the oil phase preparation tank and stirred and mixed. The prepared oil phase is sent to the oil phase storage tank through a transfer pump to prepare for production. The temperatures of the oil phase preparation tank and oil phase storage tank are automatically adjusted and controlled by electric regulating valves to control the oil phase within the range of process requirements (controlled within the range of 90°C-100°C).
3. Continuous emulsification
The prepared aqueous phase solution passes through the valve, aqueous phase pipeline, and aqueous phase filter, and is transported by the aqueous phase conveying system under the control of the programmable controller. It is measured by the aqueous phase flow meter and sent to the pre-emulsion tank.
The prepared oil phase solution passes through the valve, oil phase pipeline, and oil phase filter, and is transported by the oil phase transportation system under the control of the programmable controller. It is measured by the oil phase flow meter and sent to the pre-emulsion tank.
The water phase and oil phase solutions are proportioned according to the process (the proportion is water phase: oil phase = 93.8: 6.2 [mass ratio]) and are automatically measured and controlled by a microcomputer to continuously enter the emulsifier for emulsification.
4. Cooling
The emulsion matrix coming out of the emulsifier flows to the steel belt cooler and is cooled to the specified temperature (below 50°C). The cooling water is recycled through an external system, and the water temperature is controlled below 20°C.
5. Preparation of emulsified granular ammonium nitrate–fuel oil explosive
The porous granular ammonium nitrate is put into the ammonium nitrate dosing spiral through the bucket elevator. According to the formula requirements, the measured diesel oil and the porous granular ammonium nitrate measured by the dosing spiral are passed through in proportion (porous granular ammonium nitrate: diesel = 94~95:6~5 [mass ratio]). The feed port is sent to the ANFO mixing screw to stir and mix into porous granular ANFO, and then automatically enters the double screw mixer. At the same time, it is mixed with the measured emulsion matrix from the emulsion-matrix hopper and additives (the main component is borax) in the double screw mixer to produce emulsified granular ANFO.
6. Charging and packaging
The emulsified granular ANFO enters the automatic bulk charging and bagging machine through the inclined spiral of finished product conveying, and is automatically charged and sewn into the finished product of emulsified granular ANFO.
7. Transfer to the transfer station
The product is conveyed by belt to the transfer station.
Process Description
Emulsified granular ANFO (ammonium nitrate fuel oil) is an industrial composite explosive made by physically mixing porous granular ammonium nitrate (AN) with an emulsion explosive matrix. Its main constituents are ammonium nitrate (typically 90%-95%), fuel oil, water, and trace amounts of emulsifiers and density regulators. It is mainly used for medium and deep hole blasting operations in open-pit or underground mines, large-scale earthwork projects, etc.
Time period
2021
2026
Geography
China,Shandong
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology