Bernick Lake Antimony Concentrator

The Bernic Lake Mine is located in Lake Bernic, Manitoba, Canada. It is a large-scale lithium , strontium , strontium , strontium, and strontium pegmatite deposit. There are nine ore belts, including two antimony belts and one lithium belt. Currently, the antimony belt is mined. Grade ore containing Ta ₂ O ₅ 0.13%, tantalum ore minerals are manganese tantalum tin, iron ore weight tantalum, tantalum baddeleyite, tantalum, tin, antimony, tantalum, niobium, microlite. It is currently the main production base of the world's raw materials.

Beneficiation plant scale of 830 tons / day, three-stage closed-circuit crushing re-election for a closed-circuit grinding ore - flotation process. The ore (330 mm) is crushed to -9.5 mm by a jaw crusher , a standard cone crusher , a short-head cone crusher, and is fed into a 2.5 mm Taylor sieve. The material on the sieve is sent to a ball mill . The ball mill discharge and the AC sieve constitute a closed circuit. . Less than 2.5 mm material passes through a 210 micron Derrick three-way feed screen. More than 210 micro-materials are selected by 7 Ï†600 mm double-headed spiral concentrators, and one spiral concentrator is selected. The spiral concentrate is selected by a shaker, the spiral tailings are passed through a 300 micron DSM sieve, and the material larger than 300 microns is returned to the ball mill. The less than 300 micron material is fed into a Ï†150 mm secondary desilting cyclone.

The less than 210 micron material is fed into the Ï†150 micron primary de-slect cyclone to remove the fine mud below 20 microns, and the bottom stream of the cyclone is roughly selected by the Dest three-layer hanging ore shaker, selected by the selected shaker, shaken The bed mine is fed into the Ï†150 mm secondary dehumidification cyclone, the cyclone overflows into the Ï†50 mm cyclone to remove mud (-7 microns), and the cyclone bottom flow is fed to the second Derrick screen and the sieve material. (+40 microns) to the coil loop scavenging, the undersize material (-40 microns) and concentrated to the machine, concentrator grit with alkyl sulfosuccinates as collector, sodium silicate, and oxalic acid as modifier, The flocide minerals are floated under the conditions of pH 2~3, the flotation concentrate is selected by the Holman shaker-cross-flow belt chute, the shaker tailings is subjected to secondary flotation, and the flotation concentrate is used with the second cross-flow belt chute. Select the antimony concentrate. Production index, tantalum concentrate grade (Ta2O5) 38.55%, recovery rate of 73%. The flow is shown in Figure 1.

Figure 1 Process of the Berner Lake antimony ore dressing plant

The tailings are treated with lime and a starter and then sent to the tailings for storage. The plant has a Mintek slurry current-carrying analyzer and an electronic computer. The Ta ₂ O ₅ content is measured simultaneously every five minutes for the tailings of the seven operations. The analysis results are reported by the computer to notify the operator to adjust the process parameters in time. Thereby ensuring the best production conditions.

Investment casting technical flow process

The silica sol casting process also called precision investment casting process. It is a less cutting or no cutting casting process. It is an excellent technique in foundry industry. Its application is very extensive. It not only applicable to various types, various kinds of alloy and casting, and produce the casting dimension accuracy and surface quality is higher than other casting method, Even other casting method can not do the complex, high temperature resistant, not easy machining castings, all can be used for investment precision casting process.

The investment casting process, it is a process that use fusible materials make soluble model, and coated with several layers of tailor-made refractory coating on the surface, after drying and hardening become a whole shell, melt the shell model by steam or hot water. Then put the shells in the sand, filling dry sand in all round and modeling. Finally roasting it based on high-temperature in the furnace, the shell after roasting, and getting the casting part after pouring molten metal.

The investment casting process can produce High precision dimensional parts, generally can reach to CT4-6(sand casting is CT10-13, die casting is CT5-7). Due to the complexity of investment casting process, there are many factors influencing the casting dimension accuracy. Such as shrinkage of mold material, deformation of the casting, Shell heating and cooling line quantity change in the process, alloy shrinkage and deformation of castings in the solidification process. The surface finish of investment castings is higher than the ordinary casting, can reach to Ra1.6~3.2.

The greatest advantages of investment casting is casting parts have high dimensional accuracy and surface finish, so it can reduce the mechanical processing. The another advantage of investment casting method is that it can cast all kinds of alloy and complex casting part, special casting high temperature alloy casting part.

The precision of the Steel Casting Part: Â±0.15mm~

Smoothness of surface of rough part: Ra6.4;

Shrinkage rate of steel investment casting products: 0.6%;

Material wastage rate: 5%;

General stainless steel casting part machining allowance: 0.7mm;

Surface preparation methods: Sand blasted, Shot blasting, Powder coating, Painting, Plating, Electrophoresis, Polishing.

Our company's production equipment and management system

CNC machining center: 8 sets AIGEMA A-8;

CNC lathe machine: 6 Guangzhou Machines and 7 Shenyang Machines;

Work days of one week: From Monday to Saturday;

Shift work: 2 shift per day;

Working hours: From AM 8:00 to PM 5:00;

2D and 3D drawing Software: AutoCAD, UG, Pro/E, SolidWorks 2013;

QC control: New type NANO CMM, FPI M5000 desktop metal analyzer, Easson projector, Mechanical properties tester.

The steel casting process and machining equipment:

The steel casting process and machining equipment

Steel Casting Part

Stainless Steel Lost Wax Casting, Steel Casting Part, Steel Investment Casting Part, Steel Silica Sol Casting Part

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