Method for producing low-lead tin-based babbitt metal by using tin refining slag

A technology based on babbitt alloy and refining slag is applied in the field of comprehensive recovery of valuable metals from crude tin refining slag and new materials, which can solve the problems of slag loss, high energy consumption and high failure rate of valuable metals, and achieve the production of smelting waste slag. The effect of small amount, high resource utilization rate and high smelting recovery rate

Pending Publication Date: 2022-07-22
柳州华锡有色设计研究院有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the production of tin-based babbitt alloy is mainly the preparation of tin, antimony and copper pure metal ingots and the recycling of tin smelting slag by conventional smelting process. There is no market competitiveness, and the market bidding and bargaining power is low; the resource utilization of the conventional smelting process of tin smelting slag generally has a certain process configuration in large-scale tin smelting enterprises, and the main method depends on the reduction and smelting of tin smelting slag and tin concentrate in the reduction furnace to produce high antimony Copper crude tin, and then remove iron, arsenic, lead, and bismuth according to the conventional tin refining process, such as adding aluminum to remove arsenic, because the chemical characteristics of arsenic and

Method used

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Examples

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Embodiment 1

[0023] The present embodiment is an example of the method for producing low-lead tin-based babbitt alloys by utilizing tin refining slag according to the present invention, comprising the following steps:

[0024] (1) The tin calcined sand: tin copper removal sulfur slag: arsenic, antimony and aluminum slag are mixed in a ratio of 1:10:20, and limestone and river sand are added to control the acidity of reducing smelting silicate at 1.2, and the reduction temperature at 1150 ℃, the output crude tin contains 9.2% copper and 8.4% antimony;

[0025] (2) Controlling the iron removal temperature of condensate at 280°C, and adding wood chips and ammonium chloride for many times to carry out deep iron removal, the iron in the crude tin is removed to 0.05%;

[0026] (3) the iron removal is less than 0.05% and the thick tin is heated to 450 ℃, and sent to the vacuum distillation furnace for separation of lead, bismuth and arsenic, the control temperature is 1200 ℃, the vacuum degree is...

Embodiment 2

[0029] The present embodiment is another example of the method for producing low-lead tin-based babbitt alloys by utilizing tin refining slag according to the present invention, comprising the following steps:

[0030] (1) The proportion of tin calcined sand: tin copper removal sulfur slag: arsenic, antimony and aluminum slag is mixed in a ratio of 2:9:15, and limestone and river sand are added to control the acidity of reducing smelting silicate at 1.3, and the reduction temperature at 1150 ℃, the output crude tin contains 7% copper and 10% antimony;

[0031] (2) Controlling the iron removal temperature of condensate at 280°C, and adding wood chips and ammonium chloride for many times to carry out deep iron removal, the iron in the crude tin is removed to 0.05%;

[0032] (3) the iron removal is less than 0.05% and the thick tin is heated to 450 ℃, and sent to the vacuum distillation furnace for separation of lead, bismuth and arsenic, the control temperature is 1200 ℃, the va...

Embodiment 3

[0035] The present embodiment is another example of the method for producing low-lead tin-based babbitt alloys by utilizing tin refining slag according to the present invention, comprising the following steps:

[0036] (1) The tin calcined sand: tin copper removal sulfur slag: arsenic, antimony and aluminum slag are mixed in a ratio of 2:10:8, and limestone and river sand are added to control the acidity of reducing smelting silicate at 1.5, and the reduction temperature at 1250 ℃, the output crude tin contains 9% copper and 5% antimony;

[0037] (2) Controlling the iron removal temperature of condensate at 280°C, and adding wood chips and ammonium chloride for many times to carry out deep iron removal, the iron in the crude tin is removed to 0.05%;

[0038] (3) the iron removal is less than 0.05% and the thick tin is heated to 450 ℃, and sent to the vacuum distillation furnace for separation of lead, bismuth and arsenic, the control temperature is 1200 ℃, the vacuum degree is...

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Abstract

The invention relates to a method for producing low-lead tin-based babbitt metal by using tin refining slag. The method comprises the following steps: (1) adding crude tin refining copper-sulfur-removed slag, crude tin refining arsenic-antimony-aluminum-removed slag, tin calcine, limestone and river sand into a reduction smelting furnace according to a certain material ratio; (2) the produced crude tin with high copper and antimony content is subjected to centrifugal iron removal, and an iron removal agent is used for deep iron removal; (3) high-copper-and-antimony-content crude tin with the iron content smaller than or equal to 0.01% is fed into a high-temperature vacuum distillation separation furnace, arsenic, lead and bismuth are removed, and a high-copper-antimony-content crude tin alloy is produced; and (4) elements such as copper and antimony are added into the high-copper-antimony crude tin alloy according to the tin-based babbitt alloy element requirements, and a low-lead tin-based babbitt alloy product is produced. The method disclosed by the invention is simple in process operation condition, high in mechanical automation degree, short in flow, environment-friendly in production process, small in smelting waste residue generation amount, free of generation of highly toxic substances, namely arsenic and aluminum residues, and high in tin smelting recovery rate.

Description

technical field [0001] The invention relates to the fields of comprehensive recovery of valuable metals from crude tin refining slag and new materials, in particular to a method for producing low-lead tin-based babbitt alloy by utilizing tin refining slag. Background technique [0002] Tin-based babbitt refers to an alloy composed of tin-based elements such as antimony and copper, also known as tin-based bearing alloy or tin-based white alloy, and is a widely used bearing material in industry. Common tin-based babbitt alloys are Sn-12Sb-4Cu-10Pb, Sn-11Sb-6Cu, Sn-8Sb-4Cu, Sn-4Sb-4Cu, etc. Among them, low-lead tin-based babbitt alloys are the most widely used and used. At present, the production of tin-based babbitt is mainly for the preparation of tin, antimony, copper pure metal ingots and the conventional smelting process of tin smelting slag. There is no market competitiveness, and the market bidding power is low; the conventional smelting process of tin smelting smelting...

Claims

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Application Information

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IPC IPC(8): C22B7/04C22B9/02C22C1/02C22C13/00
CPCC22B7/04C22B7/001C22B9/02C22C1/02C22C13/00
Inventor 蒙斌唐罡魏宗武胡明振邓久帅覃祚明吴伯增张华生苏文
Owner 柳州华锡有色设计研究院有限责任公司
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