- •Safety and protection of the atmosphere
- •Statutory environmental performance
- •Indicators of reliability
- •Operational parameters
- •Supplying aggregate
- •The inclined conveyor
- •Drying aggregate
- •Gas cleaning equipment
- •The mixing aggregate
- •Aggregate of ready mix
- •Aggregate of mineral powder
- •The coolant pump station
- •Bitumen heater
- •Operator’s cabin
- •List of measuring instruments used for monitoring compliance with the production of technological modes
- •Supplying aggregate; 2- a cold bucket elevator; 3- dedusting aggregate; 4- drying barrel; 5- a hot bucket elevator
- •Description of technological process The technological process of production
- •The scheme of the input quality control at work
- •Scheme operational laboratory quality control at work
- •Scheme of operational control over the observance of technological modes at work
- •The scheme of acceptance of laboratory control at work
- •Environmental protection.
Supplying aggregate; 2- a cold bucket elevator; 3- dedusting aggregate; 4- drying barrel; 5- a hot bucket elevator
6- mixing aggregate; 7- skiphoist; 8- storage bunker; 9- silage bank with mineral powder; 10- tank with electric heating
11- continuous bitumen heater; 12- bitumen storage; 13- mazut tank
pic. Scheme of technological process.
Description of technological process The technological process of production
hot asphalt concrete mix
(product name)
table 1.3
№
|
Name of technological operations |
The equipment |
Number of equipment |
Description of the technological operations. Technological modes, the performers. Controlled parameters and their values. Location of control, the performers. |
1 |
2 |
3 |
4 |
5 |
1 |
Dosing of mineral materials |
Dozer |
4 |
Due to the principle of weighted dose metering device provides reliable compliance of relevant formulas. To do this, a hopper mounted conveyor scales with a range of settings from 0 to 40 t / h and working in 4 stages. Mounted on the outside vibrators provide a continuous flow of material and serve to prevent the formation of bridges. Synchronous reading of the material passes on the display head belt scales and central control panel facilitates functional control and enables remote maintenance. |
2 |
Drying and heating of materials |
Drying barrel |
1 |
Conveyor belt is fed to the drying drum of a mineral that comes from individual feeders. Dryer operates on the counterflow principle and is equipped with a powerful spray of the oil nozzle. Ignition of the burner flame and monitoring is carried out from a central control panel. The burner is equipped with an electronic device for monitoring the flame. Thermometers with remote display on the center console controls are used to measure exhaust gas temperatures between the dryer drum and dust-collecting plant, dried, and temperature of the mineral output of the drum. Mazut required for the drying drum, taken from the fuel oil tanks of 3000 liters. |
3 |
Dedusting of material |
Dedusting unit |
1 |
Dust-collecting plant consists of a 4-parallel - including cyclones, which are mounted on a frame of reference. Pipelines connect the dryer cyclone and flue gas fans. Chimney is a cantilever design. The separated dust is transported by screw conveyor to the silo of its own core and hence through the steeply inclined screw conveyor to the mixing plant. |
4 |
Classification and re-dosing of mineral materials |
The screen of hot mix |
4 sieves |
Hot rock coming from the drying barrel transported by bucket elevator to the screen of the hot mixture. It is divided into four size fractions, and too large grains. If necessary, you can also work with the contours of the screen. Mounted under the screen of a hot mixture of large intermediate bunkers provide the ongoing process of work |
5 |
The dosage of the filling part |
Sieve bunker and scales for weighing the mountain sort |
1 |
Screened out rock and aggregate individual weights are dosed in accordance with a given recipe. Submission of an outsider and a natural filler in the scales for weighing aggregates via two steeply inclined spiral conveyor. (material from the drying barrel goes to the screen ABZ, screened material enters the bunker by fractions, and fractional material is fed into the bunker under the weight recipe.) |
6 |
Mixing of given composite recipes |
Twin-shaft mixer |
2 |
The weighted material from both the weight falls in the bowl shaft compulsory mixer. It is the addition of bitumen vigorous stirring. |
6 |
Intermediate storage in the feeding bunkers |
Feeding bunker |
1 |
The mixing unit is connected to the hopper appropriate rope hoist. In the bucket tilt hoist is transmitted ready-mixed product that is transported in a lift skripkovym loading hopper. Loading silos isolated from all directions. Lifts for immediate download cars are equipped with a transitional device. The transitional unit and remote controlled gates bins from the central control unit. |
,
Organization of quality control at work (the input circuit, an operational, and acceptance control).
Brief description of organization of the system of quality control in production of hot asphalt mix.
In the process of quality control laboratory services and a master of ABZ involved at work.
The order of sampling depends on the type of control and the controlled parameter.
As-built documentation in the preparation of hot asphalt mix is in line with the "Regulations on the laboratory testing service Rosavtodor."
Quality control schemes: