Present Situation Of Chinese Mine Tailings

At present, China has accumulated more than 60 billion tons of various mine tailings, and the annual output has reached about 1.6 billion tons. However, the comprehensive utilization rate of tailings is only 18.9%. Most of them aren’t utilized comprehensively. In recent years, China values the comprehensive utilization of tailings increasingly. With increased exploitation of mineral resources, the discharge of tailings will increase every year. It has become an urgent task that the comprehensive utilization of tailings.

 

Qingdao Hesheng Intelligent Environmental Protection Equipment Co., Ltd. accumulation and development in tailings comprehensive treatment industry for many years, we have strong market competitiveness with experienced R&D team, advanced automated production equipments and many core technologies in tailings dewatering process. Our company's original tailings dewatering process has a low comprehensive cost, simple, stable and easy to operate. With excellent technical technology, excellent product quality, and complete product categories, the company customizes different equipments accord-ing to customer requirements to meet site requirements.

The Ways Of Comprehensive Utilization Of Tailings As Following

       1. for tailings treatment problem, we can use advanced technology and reasonable process to re-select tailings so that the useful components of tailings can be recovered in a limited degree, which can reduce the volume of tailings;

       2. tailings can be used as raw materials of building materials, such as making cement, cast stone, ceramsite, concrete aggregate, ceramic tile, glass, etc.;

       3. tailings can be applied as filling materials of underground mine goaf, such as water sand filling materials or cemented filling aggregates. After tailings of ore-dressing plant is discharged, it is necessary to send the tailings preparation section for classification, and coarse sand is sent to the gob area, and fine stuff is stored in tailings storage;

       4. tailings materials can be used to cover soil and land for planting crops or planting trees;

       5. tailings materials can also be used to build roads, pavement materials and non-slip materials, etc.

 

Process Flow Diagram Of Tailings Dewatering

       First Proposal：Whole Tailings Dewatering

       Second Proposal：Classified Tailings Dewatering

 

All Kinds Of Filters

 

according to real situation, adjust different process groups to achieve the best treatment effect.

 

High Efficient Hydrocyclone

 

Technical Specification Of Hydrocyclone：

 

Model	Inner Diameter（mm）	Slurry Feeding Pressure (MPa)	Capacity （m3/h）	Separation Solid Size （μm）
NMT-750	750	0.03-0.4	400-550	74-250
NMT-660	660	0.03-0.4	250-360	74-220
NMT-610	610	0.03-0.4	200-260	74-200
NMT-500	500	0.03-0.4	140-220	74-200 74-150
NMT-350	350	0.03-0.4	60-90	50-150 50-120
NMT-300	300	0.05-0.4	45-80	50-150 40-100
NMT-250	250	0.05-0.4	40-65	40-100 30-100
NMT-200	200	0.05-0.4	25-40	40-100 30-100
NMT-150	150	0.05-0.4	11-20	30-74 20-74
NMT-125	125	0.05-0.4	8-15	20-100 20-74
NMT-100	100	0.05-0.4	5-12	10-100 10-74

 

GNZ Center Drive High Efficiency Thickener

 

 

 

GNZ Technical Specification：

 

Basic Data		Model
		GNZ-3	GNZ-6	GNZ-9	GNZ-12	GNZ-18	GNZ-18	GNZ-24	GNZ-30	GNZ-38	GNZ-45	GNZ-53	GNZ-60	GNZ-75
inner diameter of concentration pool(m)		3.6	6	9	12	18	20	24	30	38	45	53	60	75
depth of concentration pool(m)		2.7	3.4	3.7	3.95	4.4	4.5	4.9	5.3	6.15	7.2	8.0	8.9	8.9
settling area（m2）		10	28	63	113	254	314	452	700	1134	1590	2205	2826	4416
outline dimension	L	3.90	6.6	11	15	21	23	27	33	41	48	57	64	79
	H	4.80	5.50	5.80	6.90	8.0	8.4	9.0	9.50	10.95	12	12	13	14
Note: Anti-corrosion type is used for non-neutral medium and its exposed surface adopts heavy anti-corrosion coating process of zinc-rich primer & chlorinated chloroprene rubber paint or specific ship paint. The overflow surface is coated with high performance, wear resistant, acid & alkali resistant rubber layer. Both exposed and overflow surfaces can use a protective layer suitable for your working medium, depending on your requirements.

 

Tailings Vacuum Belt Filter

 

 

Technical Specification

 

Filtrating Area（m2）	Effective Width	Effective Length	Frame Length	Frame Width	Frame Height (m)	Weight（t）	Vacuum Consumption（m3/min）
2	500	4000	8100	1100	2070	5.5	8
3		6000	10100			6	12
4		8000	12100			6.5	16
5		10000	14100			7	18
6		12000	16100			7.6	22
8	1000	8000	12100	1600	2070	8.8	25
10		10000	14100			9.6	28
12		12000	16100			10.4	30
14		14000	18100			11.1	33
10.4	1300	8000	12100	1900	2170	9.8	28
13		10000	14100			10.8	30
15.6		12000	16100			11.5	35
18.2		14000	18100			13.2	38
20.8		16000	20100			15.1	42
20	2000	10000	14100	2700	2170	14.2	40
24		12000	16100			17.8	48
28		14000	18100			20.2	52
32		16000	20100			23.6	65
20	2500	8000	12100	3200	2270	14.8	40
25		10000	14100			18.6	50
30		12000	16100			22.2	60
35		14000	18100			26	70
40		16000	20100			29.8	80
50		20000	24100			41	95
30	3000	10000	14100	3750	2270	22.8	60
36		12000	16100			27.5	72
42		14000	18100			32.5	85
54		18000	22100			45	105
60		20000	24100			50.5	120
48	4000	12000	16100	4800	2470	39.5	92
56		14000	18100			46.8	110
64		16000	20100			52.6	120
72		18000	22100			58.3	145
80		20000	24100			63	160
114	4500	32500	41200	7100	5500	70	360

 

 CF Ceramic Disc Filter

 

Operation Principle

 

The ceramic plate immersed in the slurry tank, and the material cake layer formed on its surface under vacuum negative pressure and adsorbed by the plate capillary. The liquid passes through the inside of the plate and pipes to the vacuum tank and discharge out.The cake on the plates running by main roller to drying area, and continues to dehydrate under vacuum function. Then running to cake discharging area (without vacuum) to discharge the cake by ceramic scraper.After discharging, the ceramic plate running to the back washing area, the process water or compressed air will be enters to the ceramic plate inside by the back washing pipes, and washing the ceramic plate holes from inside to outside.After working for one shift, the ceramic plate should be washed by ultrasonic waves and combined with low concentration acid to ensure its efficiency.

 

 

Model & Area (m2)	Filter Disc/Cycle	Plate Qty./Pcs	Installed Power（kw）	Operating Power（kw）	Main Body（l×w×h）（m）
CF-1	1	12	3.5	2	1.6×1.4×1.5
CF-6	2	24	7	6	2.4×2.9×2.5
CF-15	5	60	11.5	8	3.3×3.0×2.5
CF-30	10	120	17.5	11.5	5.5×3.0×2.6
CF-48	12	144	34	24	5.7×3.1×3.0
CF-60	12	144	45	33	6.0×3.3×3.1
CF-80	16	192	63	47	7.3×3.3×3.1
CF-120	20	240	77	57	8.5×3.7×3.3
CF-144	12	144	110	89	8.0×4.9×4.7

 

 SSY Horizontal Belt Press Filter

 

 

SSY Horizontal Belt Press Filter is a new type filter, it consists of main body, electric & pneumatic control system, hydraulic control system, air-drying system and slurry feeding system. During filter working, close the filter chamber first, then feed slurry to chamber by feeding pump with certain pressure. With the help of slurry feeding pump pressure and pressure difference between two sides of filter medium to reach solid-liquid separation, the solids hold in the filter chamber, the filtrate pass through cloth and discharge out. After a certain time, the filtrate can’t flow out, the filtering process finished and stop slurry feeding. Then squeeze by high pressure and use compressed air for drying the cake. Open the filter chamber, drive roller driving the cloth to running forward and discharge the cake with scraper. Use high pressure storm to wash cloth and enter into next filtering cycle.
This filter has the advantages of simple structure, high level automation degree, low failure rate, easy maintenance and so on.

 

Features：
1.Use automatic high pressure to squeezing the cake, squeeze pressure up to Max. 1.0MPa, use high pressure compressed air to blowing the cake and make the cake moisture as low as possible.
2.Use automatic high-pressure water washing the cloth to ensure the cloth reuse and make the cloth life more longer, filtering efficiency much higher, and saving the water consumption for filter.
3.Open & close filter chamber device with short stroke, so it can open and close filter chamber quickly, and shorten the filtering cycle time. Besides, hydraulic system driving cloth running with high speed, so the minimum time for each cycle only need 4 minutes, so this filter can reach a high working efficiency.
4.The locking device for filter chamber can reach self-locking function. It with full automatic intelligent operation, monitoring, safe and reliable.

 

Technical Specification

 

Model	Filtering Area (m2)	Filter Chamber Volume (m3)	Feeding Pressure (mPa)	Press Pressure (mPa)	Main Power (KW)	Total Weight (t)	Outline Dimension (m)
SSY-1000	5	0.25	0.5-0.8	1.0	11	11.2	6×1.9×2.1
	10	0.5	0.5-0.8	1.0	15	21.5	11.5×1.9×2.1
	15	0.75	0.5-0.8	1.0	18.5	32	17×1.9×2.1
	20	1.0	0.5-0.8	1.0	18.5	42.3	22.5×1.9×2.1
SSY-2000	10	0.5	0.5-0.8	1.0	15	16.8	6.5×2.9×2.2
	20	1.0	0.5-0.8	1.0	22	32.5	12×2.9×2.2
	30	1.5	0.5-0.8	1.0	25	48.5	17×2.9×2.2
	40	2.0	0.5-0.8	1.0	30	63.2	23×2.9×2.2

SPF Stack Filter Press

 

SPF stacked pressure filter is a kind of high-efficiency, energy-saving and intelligent solid-liquid separation equipment. It makes full use of the slurry feeding pump pressure, slurry properties and rubber diaphragm extrusion pressure, and use filter cloth as filter medium to separate the solid and liquid from slurry.

Features
1.use stacked structure for the plates, use auxiliary guide device to make the operation become more stable.
2.integrate filtering, extrusion, washing, air-drying, cake discharging and cloth washing together.
3.the extrusion pressure up to 1.6MPa, it widely used in the field which has different requirements for cake moisture.
4.use hydraulic drive control system, make the operation stable and with low power consumption.
5.integrate PLC, HMI and instruments control system etc. intelligent together, it makes filter more efficient and easier.
6.use high pressure water cleaning device to make the cloth washing more effective.
7.design with circular chamber, the structure more rational, the efficiency more prominent.

 

Operating Principle:Feeding→Filtering→Extrusion→Cake washing→Air drying→Cake discharging

 

Technical Specification

 

Model	SPFⅠ-1	SPFⅠ-2	SPFⅠ-3
filter area(m2)	1	2	3
plate size(mm)	0.5m2/层
plate Qty/layer	2	4	6
length(m)	2.5
width(m)	1.5
height(m)	2.0	2.2	2.5
weight(t)	8	9	10

 

Model SPFⅡ	SPFⅡ-3	SPFⅡ-6	SPFⅡ-9	SPFⅡ-12	SPFⅡ-15	SPFⅡ-18	SPFⅡ-21	SPFⅡ-24
filter area(m2)	3	6	9	12	15	18	21	24
plate size(mm)	1.5m2/层
plate Qty/layer	2	4	6	8	10	12	14	16
length(m)	3.7
width(m)	4.1
height(m)	2.6	2.8	3.2	3.7	4.2	4.6	5.1	5.5
weight(t)	12	13	14	15	16	17	18	19

 

Model SPFⅢ	SPFⅢ-18	SPFⅢ-24	SPFⅢ-30	SPFⅢ-36	SPFⅢ-42	SPFⅢ-48	SPFⅢ-54	SPFⅢ-60	SPFⅢ-66
filter area(m2)	18	24	30	36	42	48	54	60	66
plate size(mm)	3.0m2/层
plate Qty/layer	6	8	10	12	14	16	18	20	22
length(m)	5.1
width(m)	5.5
height(m)	4.3	4.5	4.9	5.4	5.8	6.3	6.8	7.2	7.7
weight(t)	31	33	35	37	39	41	43	45	47

 

ModelSPFⅣ	SPFⅣ-60	SPFⅣ-72	SPFⅣ-84	SPFⅣ-96	SPFⅣ-108	SPFⅣ-120	SPFⅣ-132	SPFⅣ-144	SPFⅣ-156	SPFⅣ-168
filter area(m2)	60	72	84	96	108	120	132	144	156	168
plate size(mm)	6m2/层
plate Qty/layer	10	12	14	16	18	20	22	24	26	28
length(m)	7.1
width(m)	5.5
height(m)	5.4	5.8	6.2	6.6	6.9	7.2	7.6	7.9	8.3	8.6
weight(t)	92	96	100	104	108	112	116	120	124	128

 

Intelligent Horizontal Press Filter

Intelligent press filter is an intelligent horizontal filter press. It uses a pressure difference formed on both sides of filter cloth to achieve solid-liquid separation. The filter contains electric and pneumatic control system, hydraulic system and main machine It can also be used for pressing, washing and drying of high pressure diaphragm.

It is equipped with an automatic discharging device, which solves the problem that traditional horizontal filter press cannot discharge automatically, and it realizes automatic filtering, safe and reliable.

It is equipped with a liquid collecting separating device to ensure cake and filtrate do not interfere with each other.

It is equipped with an automatic cloth cleaning device, which uses high-pressure water to clean, effect is good.

Cloth of this equipment is convenient to replace, labor intensity is small and efficiency is high.

Qingdao Hesheng Intelligent Environmental Protection Equipment Co., Ltd. accumulation and development in tailings comprehensive treatment industry for many years, we have strong market competitiveness with experienced R&D team, advanced automated production equipments and many core technologies in tailings dewatering process. Our company's original tailings dewatering process has a low comprehensive cost, simple, stable and easy to operate. With excellent technical technology, excellent product quality, and complete product categories, the company customizes different equipments according to customer requirements to meet site requirements.

 

Using Site

 

 

Other Tailings Dewatering Processes

 

 

New Process Of Separation And Washing Red Mud

（1）process flow diagram

 

（2）process features

1. Discharged red mud with alkali can be reduced to: 6kg / t (dry red mud);

2. Without red mud separation tank and washing tank, it can save a lot of construction investment and simplify alumina process to improve production environment, reduce energy consumption greatly and increase alumina recovery efficiency.

 

New Process For Comprehensive Utilization Of Ultra-fined Fly Ash (Coal Chemical Fine Slag) Deashing In Coal-fired Power Plants

（1）process flow diagram

 

（2）process features

1. Wet production, no dust pollution, closed water circulation, zero emissions.

2. The products have good quality, economic and social benefits.