CN104671662A - Method for producing glass by use of tailing resources - Google Patents

Abstract

The invention discloses a method for producing glass by use of tailing resources. The method comprises the following steps: (1) ore dressing; (2) evenly mixing quartz and feldspar obtained by flotation in the step (1) with other raw materials according to glass component requirements, thereby obtaining a glass batch; (3) granulating the glass batch; (4) granulating and preheating the glass batch; and (5) producing the glass according to a conventional glass preparation process. The method is capable of reducing the energy consumption and also capable of greatly reducing the pollution and safety problems due to tailing piling.

Description

A kind of method utilizing resource of tailings to produce glass

Technical field

The invention belongs to mine tailing recycling field, particularly relate to a kind of method utilizing resource of tailings to produce glass.

Background technology

Mine tailing is Manual Mineral Deposits, refers to the slag of the ore of exploitation extracting gold from through pulverizing, flotation, magnetic separation etc., after molybdenum, copper etc., the important component part of Secondary Resources Generated From Mining.Should not the Mine Solid Wastes of sorting again under prevailing condition, be deposited in the Tailings Dam built near mining.Accumulate over a long period, the mine tailing quantity of storing up is increasing.It is reported, the mine tailing that countries in the world To Mining Development produces reaches more than 5,000,000,000 tons every year.According to estimates, the tailings pile storage of the whole metal mine of China more than 6,000,000,000 tons, but also with in the speed of annual more than about 600,000,000 tons increase.Along with the expansion of To Mining Development scale and the reduction of milling ore grade, the quantity of tailings impoundment also will increase year by year.Tailings impoundment, land occupation, waste resource, contaminate environment.Therefore, the 21 century problem be jointly concerned about of countries in the world has been become to the improvement of mine tailing and recycling.

Our company's application number be 201310070979.5 a key name be called in a kind of mine tailing extract quartz, feldspar technique, quartz in mine tailing, feldspar can be separated, the quartz sand size that this production technique is selected from mine tailing mainly about 200 orders (40 order ~ 300 order).Manufacture glass quartz sand and require that granularity is 25 order ~ 120 orders, 200 object left and right quartz sands can not make routinely for manufacturing glass.

Summary of the invention

The object of the invention is to propose a kind of quartz utilized in mine tailing, feldspar resource, reduce the wasting of resources and utilize resource of tailings to produce the method for glass.

To achieve these goals, the present invention adopts following technical scheme:

A kind of method utilizing resource of tailings to produce glass, comprise the following steps: (1), ore dressing, will containing magneticmetal minerals separation out from mine tailing, directly wash away or clean the mud in the dirt and mine tailing sloughing mineral surface, flotation is carried out to mine tailing, quartz, feldspar are separated for subsequent use, containing multiple non-ferrous metal in floating tail, is separated and is used as his use; (2) quartz, by step (1) floatingly selected, feldspar mix according to the component requirements of glass with rhombspar, Wingdale, soda ash, saltcake, carbon dust, obtain glass batch; (3), by glass batch be granulated, density 1.8-2.3g/cm after granulation ³, granular size: 3mm-20 mm;

(4), glass batch pelletizing and pre-heating;

(5), then conveniently glass preparation technique, obtained glass, to obtain final product.

Glass Design composition (%) is as shown in the table:

Preferably; the method of glass batch granulation is: glass batch powder is under the forced draught of hydraulic efficiency system; powdery admixtion is pressed into granulation shape; through grain powder tripping device; make the material after granulation deliver to finished product conveyer, the admixtion of powdery is again got back to main frame precompressed feed bin through feeding back device and is again granulated.

Preferably, adopt kiln waste gas to carry out preheating to the admixtion after granulation, temperature is for arriving 300-400 DEG C.

Further; adopt kiln waste gas to carry out preheating to the admixtion after granulation, carry out preheating by the waste gas of being drained by chimney introducing preheating machine to raw material with induced draft fan, spent air temperture reaches 300-400 DEG C; by raw material preheating to comparatively high temps, subsequent disposal can be easy to.

Preferably, granulating of the batch technique is:

(1), powdered glass admixtion enters stirrer and stirs;

(2) admixtion after, stirring enters middle feed bin through rotary conveyor;

(3) vibrating feeder, below middle feed bin, sends into granulation machine by powdery admixtion through rotary conveyor uniformly;

(4), be granulated closely knit after admixtion, enter subsequent processing through finished belt transfer roller, the admixtion of non-finished product, through granulation machine material return system, turns back to granulation machine precompressed feed bin, again through granulation until finished product.

Preferably, glass batch pelletizing and pre-heating technique is:

(1), powdered glass admixtion enters stirrer and stirs;

(2) admixtion after, stirring enters middle feed bin through rotary conveyor;

(3) vibrating feeder, below middle feed bin, sends into granulation machine by powdery admixtion through rotary conveyor uniformly;

(4), be granulated closely knit after admixtion, enter preheating machine through finished belt transfer roller;

(5) pellet, after preheating, sends pellet into furnace hopper through lift.

Preferably, above-mentioned mine tailing is gold, copper or molybdic tailing.

Beneficial effect of the present invention: this production technique prepares glass batch granulation by fine sand, make the raw material being applicable to produce glass, after glass batch granulation, temperature of fusion reduces by more than 50 DEG C, burn-off rate can be accelerated, improve furnace ability, increase load, reduce kiln energy consumption, can save energy 20 ~ 30%, volume increase more than 10% ~ 30%, the Time dependent that pellet preheating temperature can be passed through in preheating machine according to the length of preheating machine and pellet, the pellet after heating by the exhaust gases is utilized to accelerate burn-off rate, shorten fusing time, reduce temperature of fusion in kiln, increase yield, lower energy consumption, and greatly can reduce the pollution and safety problem that tailings impoundment brings.

Accompanying drawing explanation

Fig. 1 is that in mine tailing, mica content is high, mineral processing circuit figure when feldspar content is low.

Mineral processing circuit figure when Fig. 2 is mine tailing andesine content height.

Fig. 3 is glass batch pelletizing technology schema.

Fig. 4 is glass batch pelletizing and pre-heating process flow sheet.

Embodiment

Utilize resource of tailings to produce a method for glass, comprise the following steps:

(1), ore dressing, in mine tailing, mica content is high, ore-dressing technique when feldspar content is low as shown in Figure 1, mine tailing andesine content height time ore-dressing technique as shown in Figure 2.The corresponding Fig. 1 of technique one, technique two corresponding diagram 2,

A kind of mine tailing composition is as follows:

Technique one is as follows:

From mine tailing, use magnetic separation containing magneticmetal minerals separation out, wipe the mud selecting and slough in mineral surface dirt and mine tailing, with direct flotation, isolate mica (containing non-ferrous metal), quartz, feldspar is isolated with direct flotation, containing multiple non-ferrous metal in floating tail, wherein various metal can be separated again;

Technique two is as follows:

From mine tailing, use magnetic separation containing magneticmetal minerals separation out, wipe the mud selecting and slough in mineral surface dirt and mine tailing, with reverse flotation, isolate mica and non-ferrous metal, feldspar is separated from quartz, feldspar with reverse flotation, quartz departs from naturally, and feldspar is dried;

The quartz used in above-mentioned technique, feldspar extracting method and the flotation agent that uses can be 201310070979.5 with reference to our company's application number is method in the patent document of 201310071037.9 with application number.

After using the ore dressing of this technique, obtain following composition:

Chemical composition

SiO 2

Al 2O 3

Fe 2O 3

TiO 2

CaO

MgO

K 2O

Na 2O

L.O.I

%

93.92~99.13

2.91~0.47

0.09~0.03

0.04~0

0.01~0

0.01~0

2.26~0.22

14.0~0.068

0.29

Meet and make raw-material composition requirement needed for glass.

Following concrete steps can be used to implement:

Flow in first mixing vessels by the mine tailing slurries through scouring, desliming, in the first mixing vessels, add the H2SO4 of 5%, the pH value adjusted in the first mixing vessels is 6 simultaneously; Slurries enter in the second mixing vessels again, in the second mixing vessels, add flotation 1 dose to stir simultaneously, the each constituent mass per-cent of flotation agent 1 is: cationic polymers 33%, sodium sulfonate 35%, diesel oil 31.8%, pine camphor oil 0.2%, and flotation agent 1 add-on is 3kg/t.Abundant reaction, after by the time changing activity, slip is put into first paragraph flotation machine 1 again and is carried out flotation.Isolate quartz and feldspar.

The flotation froth floatingly selected flow in flotation machine 2, flotation agent 2 is added in flotation machine 2 mixing vessels, flotation agent 2 each constituent mass per-cent is: the lipid acid 33% outside composite amine 32%, Glacial acetic acid, Glacial acetic acid 5%, diesel oil 29.7%, pine camphor oil 0.3%, and flotation agent 2 add-on is 2.5kg/t.The pH value added in ammoniacal liquor adjustment flotation machine 2 is 7, reduces Fe2O3 content, simultaneously the toxic mineral such as mica, landwaste and particle emersion by reverse flotation principle.

The slurry stream that flotation machine 2 floatingly selects is in flotation machine 3, flotation agent 3 is added in flotation machine 3, flotation agent 3 each constituent mass per-cent is: composite amine 30%, soap 30%, Glacial acetic acid 10%, diesel oil 27%, pine camphor oil 0.3%, Sodium hexametaphosphate 99 2.7%, and flotation agent 3 add-on is 2kg/t.In flotation machine 3, add the H2SO4 of 4%, the PH value in adjustment flotation machine 3 is 6 simultaneously.Feldspar emersion is come, thus reaches quartz and being separated of feldspar.

(2) flotation separation goes out quartz, feldspar and rhombspar, Wingdale, light alkali, saltcake, carbon dust mix according to the component requirements of glass, obtain glass batch powder;

Preferably, Glass Design composition (%) requires as following table:

(3) glass batch granulation; Technical process as shown in Figure 3;

Concrete steps are:

A, by powdered glass admixtion send into stirrer stir;

Admixtion after b, stirring enters middle feed bin through rotary conveyor;

Vibrating feeder below c, middle feed bin, sends into granulation machine by powdery admixtion through rotary conveyor uniformly;

D, be granulated closely knit after admixtion, enter subsequent processing through finished belt transfer roller, the admixtion of non-finished product, through granulation machine material return system, turns back to granulation machine precompressed feed bin, again through granulation until finished product.

(4) glass batch pelletizing and pre-heating; Technical process as shown in Figure 4;

Concrete steps are:

A, powdered glass admixtion enter stirrer and stir;

Admixtion after b, stirring enters middle feed bin through rotary conveyor;

Vibrating feeder below c, middle feed bin, sends into granulation machine by powdery admixtion through rotary conveyor uniformly;

D, be granulated closely knit after admixtion; preheating machine is entered through finished belt transfer roller; kiln waste gas is adopted to carry out preheating to the admixtion after granulation; introduced in preheating machine by the waste gas of being drained by chimney with induced draft fan, spent air temperture reaches 300-400 DEG C, the Time dependent that pellet preheating temperature can be passed through in preheating machine according to the length of preheating machine and pellet; the pellet after heating by the exhaust gases is utilized to accelerate fusing time; be reduced in temperature of fusion in kiln, increase yield, lower energy consumption.

Pellet after e, preheating, sends pellet into furnace hopper through lift.

(5) conveniently glass preparation technique after, obtained glass.

Method of the present invention is preferred for gold, copper, molybdic tailing, also may be used for other tailings glass.

Claims (7)

1. utilize resource of tailings to produce a method for glass, it is characterized in that: comprise the following steps:

(1), ore dressing, will containing magneticmetal minerals separation out from mine tailing, directly or clean slough mineral surface dirt and mine tailing in mud, flotation is carried out to mine tailing, quartz, feldspar are separated for subsequent use, containing multiple non-ferrous metal in floating tail, is separated and is used as his use;

(2) quartz, by step (1) floatingly selected, feldspar mix according to the component requirements of glass with rhombspar, Wingdale, soda ash, saltcake, carbon dust, obtain glass batch;

(3), by glass batch be granulated, density 1.8-2.3g/cm after granulation ³, granular size: 3mm-20 mm;

(4), glass batch pelletizing and pre-heating;

(5), then conveniently glass preparation technique, obtained glass, to obtain final product.

2. a kind of method utilizing resource of tailings to produce glass according to claim 1, is characterized in that: Conventional glass design mix is (%):

。

3. a kind of method utilizing resource of tailings to produce glass according to claim 1; it is characterized in that: the method for glass batch granulation is: glass batch powder is under the forced draught of hydraulic efficiency system; powdery admixtion is pressed into granulation shape; through grain powder tripping device; make the material after granulation deliver to finished product conveyer, the admixtion of powdery is again got back to main frame precompressed feed bin through feeding back device and is again granulated.

4. a kind of method utilizing resource of tailings to produce glass according to claim 1, it is characterized in that: adopt kiln waste gas to carry out preheating to the admixtion after granulation, temperature is for arriving 300-400 DEG C.

5. a kind of method utilizing resource of tailings to produce glass according to claim 1, is characterized in that: granulating of the batch technique is:

(1), powdered glass admixtion enters stirrer and stirs;

(2) admixtion after, stirring enters middle feed bin through rotary conveyor;

(3) vibrating feeder, below middle feed bin, sends into granulation machine by powdery admixtion through rotary conveyor uniformly;

(4), be granulated closely knit after admixtion, enter subsequent processing through finished belt transfer roller, the admixtion of non-finished product, through granulation machine material return system, turns back to granulation machine precompressed feed bin, again through granulation until finished product.

6. a kind of method utilizing resource of tailings to produce glass according to claim 1, is characterized in that: glass batch pelletizing and pre-heating technique is:

(1), powdered glass admixtion enters stirrer and stirs;

(2) admixtion after, stirring enters middle feed bin through rotary conveyor;

(3) vibrating feeder, below middle feed bin, sends into granulation machine by powdery admixtion through rotary conveyor uniformly;

(4), be granulated closely knit after admixtion, enter preheating machine through finished belt transfer roller;

(5) pellet, after preheating, sends pellet into furnace hopper through lift.

7. a kind of method utilizing resource of tailings to produce glass according to claim 1-6 any one, is characterized in that: described mine tailing is gold, copper or molybdic tailing.