Large, stationary, modular aggregate processing plant and method of manufacturing and installing same

A method of manufacturing and assembling a large stationary, aggregate processing screening tower comprising five layers of welded modules including a top module, said method comprising,

• fabricating said welded modules and preassembling them with aggregate processing equipment internal within the module,
• transporting said weldment modules in a preassembled condition to a field site where they are stacked up on one another and secured together to form said five layers of welded modules,
• said layers of welded modules adapted to receive aggregate product at the top module and said product is processed by screening, blending, and sizing as it moves downwardly through said welded modules and their said aggregate processing equipment for final collection of said product at various levels.

A large stationary, aggregate processing screening tower comprising,

• weldment modules preassembled with aggregate processing equipment internal within the weldment modules,
• said weldment modules in a preassembled condition are stacked up on one another and secured together,
• said weldment modules in a stacked-up configuration adapted to receive aggregate product at the top weldment module and said product is processed by screening and sizing as it moves downwardly by gravity through said weldment modules and their said aggregate processing equipment for final sizing and collection of said product.

A large stationary, aggregate processing screening tower comprising five layers of welded modules including a top module and having second and third lowermost layers and having aggregate processing equipment therein, said layers of welded modules secured together and adapted to receive aggregate product at said top welded module and adapted to permit said product to be processed by screening, sizing and classifying said aggregate as it moves by gravity downwardly through said layers of welded modules and their said aggregate processing equipment for final collection of said product.

In a large, stationary aggregate processing screening tower, having five layers of modules, a double screen vibrator mounted in and extending through two of said layers, said double screen vibrator having two screens positioned one above the other and mounted at a downwardly inclined angle and having a lower discharge end having outlet conduits for discharging screened product separately from each of said screens,

• a hot air heat conduit in communication with said double screen vibrator adjacent the discharge end of the lower of said screens and for directing hot air into said vibrator where it rises within said vibrator to dry the screened product therein,
• and a heater in communication with said heat conduit for supplying hot air to said heat conduit and over said screened product.

A method of manufacturing a large stationary, aggregate processing plant and comprising,

• fabricating weldment modules and preassembling said modules with aggregate processing equipment internal within the weldment modules,
• transporting said weldment modules in a preassembled condition to a field work site where the plant is to be erected on a foundation, aligning said weldment modules with one another,
• said weldment modules adapted to receive aggregate at the top uppermost weldment module and permit said aggregate to be processed by feeder screens and sizing into aggregate product as said product moves by gravity through said weldment modules and their said aggregate processing equipment for final collection of said product.

A large stationary, aggregate processing plant comprising,

• weldment modules preassembled with aggregate processing equipment internal within the weldment modules,
• said weldment modules are arranged in aggregate processing relationship to one another,
• said arranged weldment modules including a top weldment module and adapted to receive aggregate product at said top weldment module processing by screening and sizing as said product moves downwardly by gravity through said weldment modules and their said aggregate processing equipment.

A large, stationary aggregate processing screening tower, having five layers of modules, a double screen vibrator mounted in and extending through two of said layers, said double screen vibrator having two screens positioned one above the other and mounted at a downwardly inclined angle and having a lower discharge end having outlet conduits for discharging screened product separately from each of said screens,

• high frequency electric vibrators connected with said screens for vibrating said screens at a frequency of 3000 to 5000 rpm,
• a hot air heat conduit in communication with said double screen vibrator adjacent the discharge end of the lower of said screens and for directing hot air into said vibrator where the air rises within said double screen vibrator to dry the screened product to thereby result in fine sand therein,
• and a heater in communication with said heat conduit for supplying hot air to said conduit and over said fine sand to reduce the moisture content of the fine sand to 2% to 3% and remove the fine 200-mesh particles of sand to achieve production of concrete sand in a dry application.