Block gypsum powder
dedicated flash burning stove
[De the dynamic the calciner]: de furnace is the newly developed
gypsum dynamic calciner. Having dispersed, classification, drying,
calcining function rapid airflow, for the combination of one of the
firing device.
Domestic self-developed airflow calcined device.
? shape of a vertical cylinder, with the scrambler at the bottom in
a vertical axis and the motor associated produce rotary motion, one
side in the lower portion of the feed, the lower portion of the
other side is passed into the hot air, the top of the material to
trap gas the solid separation the wind sent to storage silos.
? basic principle is: the material under the combined effect of the
high-speed hot air and spin the rotor blades of gypsum powder
particles of gas-solid ratio increased, the surface of each
particle quick touch of heat, particles off crystal water burst at
the same time, so fully calcined, specific surface area than before
firing is improved.
?: suitable for gypsum, phosphogypsum drying flash burn. Continuous
operation, fast heat exchange, there is no aggregate phenomenon,
the the gypsum particles suspended calcined full, from feeding to
feeding only a few seconds.
? gypsum binder standard consistency with decreasing particle size,
the setting time of the particle size decreases shorter, the
compressive strength of standard consistency law. This shows that
the gypsum binder water demand and compressive strength is the the
chemical gypsum particle size, while the impact of the the chemical
gypsum binder setting time of the main factors is the soluble
impurities in chemical gypsum.
De calciner production of gypsum powder with good particle
pole.
? gypsum calciner exhaust about *0 ?, about *0,**0 m3 / h, can
supply gypsum block dryer that take full advantage of the heat and
shorten the drying time of the gypsum block (Anhui company about 2
hours drying *0 **0% BLOCK moisture).
Gypsum, phosphogypsum (the chemical gypsum) calcining process
Introduction
Desulfurization gypsum-containing surface water is generally about
*2%, phosphogypsum containing surface water is generally about *5%.
Phosphorus gypsum, sulfur, gypsum, also known as chemical gypsum.
Characteristics of chemical gypsum in ***5, the company's science
and technology workers after a lot of research, testing,
development, the original drying, calcination two-step process
improvements for the one-step process. De dynamic calciner device
to complete the four steps: 1. Beaten. 2. Drying. 3 classification.
4. Calcination. Out surface water first, then prolapse the part of
the water of crystallization can be obtained gypsum building, the
device will be in the production process of drying and calcining
sub-step process the process, so that not only the higher
performance can be obtained hemihydrate gypsum; but also reduces
the cost of equipment investment .
Process: chemical gypsum fed by the feeder dry, decentralized,
hierarchical, the calcined functional de calcination furnace, high
temperature hot air into the furnace to a gas-solid mixing, rapid
heat and mass transfer, and rotating flow, After a few seconds of
that calcined into building plaster. Through two gas-solid
separation, powdered gypsum powder can be used as the gypsum block
building materials products.
Drying - the calcination process characteristics
The test results of the calcined gypsum powder:
1, the flexural strength: 3MP
2, compressive strength: 5MPa
3, the initial setting time: 3 minutes
4, the final setting time: 8 to *0 minutes.
5, pulverized, dried, calcined, classification in the completion of
the calciner. The whole process within a few seconds to
complete.
Principle and characteristics of the calcined equipment
The [de dynamic calciner basic principle:
Domestic self-developed airflow calcined device. The outer shape of
a vertical cylinder, with the scrambler at the bottom in a vertical
axis and the motor associated produce rotary motion, one side of
the lower feed, the lower portion of the other side is passed into
the hot air, desulfurization gypsum powder in common to the rotary
blade and the tangential hot air gypsum powder under rotation
dispersion, rising spiral. Blade material and the hot gases are
quickly dispersed by the de furnace bottom rapid mixing into a high
solid-gas ratio suspension decomposition, generates a rotary motion
in the axial direction of the furnace body, rapid heat exchanger so
that the material and the heat carrier, to achieve the purpose of
dihydrate gypsum dehydration, this way can also be referred to
swirl calcination.
Chemical gypsum powder stripped off the surface water in de furnace
crystal water; into the building gypsum powder. The top of the
material to trap gas-solid separation mechanical transport to
storage silos.
[Features]:
Continuous operation, fast heat exchange, there is no aggregate
phenomenon, chemical gypsum powder particles suspended gas-solid
ratio increased in the high-speed hot air and rotating blades
together, each particle surface quickly touch calories particles
off crystal water burst so calcined sufficiently increase the
specific surface area than before calcination. From feeding to
feeding only a few seconds. Calcined particle size distribution is
much wider than before calcination, is conducive to the strength of
the gypsum powder.
The gypsum binder standard consistency with decreasing particle
size, setting time as the particle size decreases shorter
compressive strength showed a standard consistency rule. This shows
that the gypsum binder water demand and compressive strength is the
the chemical gypsum particle size, while the impact of the the
chemical gypsum binder setting time of the main factors is the
soluble impurities in chemical gypsum.
De calciner production of gypsum powder with good particle
pole.
De furnace is a combination of the advantages of the above
equipment newly developed dynamic gypsum calciner. Having
dispersed, classification, drying, calcining function, for the
combination of one of the fast flow firing device.
Calcined sulfur gypsum conditions and requirements
Material:
Gypsum, surface moisture content of about *2%.
Phosphogypsum surface moisture content of about *5%.
The the ignition loss rate of chemical gypsum calcined into
Hemihydrates *7%.
Heating: coal-fired direct fire heating.
Calcined hot air temperature: **0 ~ **0 ? adjustable.
Product recovery> *9.5%.
Energy consumption indicators
This indicator refers to the above system desulfurization gypsum
from entering the feeder to the packaging end of the process of
production indicators, the accounting mainly include heat
consumption, electricity consumption, and labor costs.
Sources of heat consumption
Total: per ton of coal consumption of *0 kg / ton (***0 kcal
Coal)
? calciner exhaust about *0 ?, approximately *0,**0 m3 / h, can
supply gypsum block dryer that take full advantage of the heat and
shorten the drying time of the gypsum block (Lujiang a company
about 2 hours drying *0 - *0% Block moisture).
Power consumption
According to the above system supporting power: the translation of
the power consumption per ton of product for: *6 ~ *0kwh
Covers (*0 tons / year design)
De calcining system: *5 × *0 × *5 (length × width ×
height) |
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