据历史记载，宣德三年，皇帝下旨铸铜炉，合计一万八千余件，现竟然失落得几乎无迹可寻，就连台湾的故宫博物院，也仅收藏了四座。其实，当时宣炉除了供御用外，也用来分赐给诸王、臣下及京内各郊祭坛，甚至于各地的闻名寺院，分布得非常广泛，然而在改朝换代之际，许多宣炉(包括后仿炉和私款炉)，不但失散了，甚至于销毁，至今宣炉已成为可遇不可求的珍品，后仿炉、私款炉亦珍贵。原因是宣炉在短短的四五百年间遭到了多种劫难。 According to historical records, jintong for three years, under the emperor emperor copper casting furnace, total more than eighteen thousand, now has lost almost no trace to be found, even the Palace Museum in Taiwan, and only a collection of four. Actually, when XuanLu, except for the queen's are also used to points given to the Kings, liegeman and each suburb in Beijing altar, even around the famous temple, distribution is very extensive, but in succession, many XuanLu (including copy after furnace and private furnace), not only were separated, and even destroyed, still XuanLu has become a rare treasures, and then I copy after furnace, private furnace is also valuable. The reason is that the xuanstove has been subjected to a variety of disasters in just four or five hundred years. 　　一、崇祯铸钱 One, chongzhen cast money 　　崇祯是明朝最后一朝，内优外患，连年战争，国库空虚，崇祯曾将内府库藏的历代各种铜器，全数发给宝源局，拿去熔铸钱币，其中包括上古三代及宣德年间的铜器。 Is the Ming dynasty chongzhen last once, optimal foreign and within several years of war, empty coffers, chongzhen had all sorts of vessels, treasures hidden in the history of the lump sum schroder bureau, to casting COINS, including three generations and xuande emperor of ancient bronzes. 　　二、咸丰铸钱 Second, the salt is cast money 　　清代咸丰年，亦是内忧外患，连年战争，国库空虚，为了发行钱币，不惜把皇宫、内廷保存的各种铜器(包括皇室历代旧藏的铜炉、薰炉、铜龟鹤等)毁掉用以铸钱。 Qing xianfeng years, is also the malaise, years of war, empty coffers, in order to issue money, at the palace, the imperial palace to save all kinds of bronze (including the royal dynasties of old copper furnace, furnace, copper turtle, cranes, etc.) to destroy to money. 　　三、抗日战争时期 The Anti-Japanese War period 日本人做枪炮缺乏铜料。于是在我国各地搜集铜器，熔化后改做枪炮。如北京大慧寺内正殿原有高达十几米的铜观音像，在民国时期被日本人毁掉，换成了木制观音像即是一例。 The Japanese had a shortage of copper in their guns. So we collected the bronze wares from all over the country, and then turned them into guns. For example, the temple was destroyed by the Japanese in the republic of China and replaced with a wooden view. 　　四、民间所藏铜炉的三次大劫难 The three major disasters of the copper furnace in the private sector 　　第一次是在1950～1953年抗美援朝时，战争需要大量的枪炮弹药，便发动民间收集“旧铜”，从各地所收集来的旧铜器中，自然有不少的铜炉。 Is the first time in 1950-1953, when the Korean war needs a lot of guns and ammunition, then launch a private collection "old copper", collected from all over the old bronze, nature has many copper furnace. 　　第二次，1958年大跃进大炼钢铁时，全民征集铜铁，老百姓家里的铜器，如铜盆、铜锅、铜勺、铜炉等都贡献出来了。 The second time, the great leap forward in 1958 large iron and steel smelting, a collection of copper iron, ordinary people the vessels of brass in the home, such as copper POTS, copper, brass, copper furnace contribution out. 　　第三次，是在1966～1976年的文化大革命中，各种古旧铜器，包括铜炉，自然作为迷信品“破四旧”被收集到铜材厂熔掉。虽然后来经文物部门拣选出不少，但已被熔化的自然也不在少数。这是建国后三次铜炉大劫难。 Third, it is in 1966-1976 cultural revolution, all kinds of antique bronzes, including copper furnace, nature as a superstition "broken capitalism" was collected by copper plant melt. Although the cultural relics department has subsequently chosen many, it has been melted down by nature. It was the third bronze furnace disaster since the founding of the republic. 　　五、销洋庄 Marketing club 　　几十年来东西方的海外买家都大谈考古学，争相购买明清铜炉，然而有些人只会要求铜质精美，却不懂欣赏皮色的美丽，一些商人为了迎合买家，竟把旧炉磨成崭新的炉，破坏了不少好炉子。 East and west for decades overseas buyers are talk about archaeology, rushed to buy copper furnace, Ming and qing dynasties, however, some people will only require fine copper, but don't understand, to appreciate beauty, though some traders to cater to the buyer, to have the old furnace into new furnace, destroy a lot of good stove.